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] This disclosure relates to the field of beauty instrument technology, and in particular to a stretchable device, its manufacturing method, and a beauty apparatus. Background Technology

[0002] Stretchable electronics is an important development direction in flexible electronics. Only when electronic products possess stretchability can multi-axis curved surface deformation be achieved. The display, sensing, and functionalization of complex surfaces are all important application prospects for flexible electronics. In optoelectronic applications, besides displays, stretchable electronics also have important directions in medical and cosmetic applications. According to relevant literature, different photoelectric signals can achieve different functions. For example, red light can have a cosmetic effect, and there are cosmetic products (such as face masks) on the market. However, cosmetic products suffer from poor light uniformity.

[0003] Summary of the Invention

[0004] This disclosure provides a stretchable device, its manufacturing method, and a beauty apparatus, the specific solutions of which are as follows:

[0005] This disclosure provides a stretchable device, including a substrate layer, a plurality of island regions spaced apart from each other disposed on the substrate layer, 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 region includes an anode, a light-emitting layer, and a cathode disposed on the substrate layer. The island region includes an effective light-emitting area and an overlapping area located around 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 disposed on the same layer as the anode. The cathode and the auxiliary cathode are electrically connected.

[0007] In one possible implementation, in the stretchable device provided in the embodiments of this disclosure, the auxiliary cathode includes a plurality of overlapping portions located at each corner of the overlapping area, and the cathode is electrically connected to at least one of the overlapping portions.

[0008] In one possible implementation, in the stretchable device provided in the embodiments of this 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 one possible implementation, the stretchable device provided in the embodiments of this 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 penetrating the pixel defining layer.

[0010] In one possible implementation, in the stretchable device provided in the embodiments of this disclosure, the island area further includes a transition area located outside the overlapping area, the transition area being provided with an annular closed partition groove, and the cathode being disconnected at the partition groove.

[0011] In one possible implementation, the stretchable device provided in the embodiments of this disclosure further includes: a planarization layer located between the substrate layer and the anode; a first passivation layer located between the planarization layer and the anode; a second passivation layer located between the first passivation layer and the anode; a first inorganic encapsulation layer located on the side of the cathode opposite to the substrate layer; an organic encapsulation layer located on the side of the first inorganic encapsulation layer opposite to the substrate layer; and a second inorganic encapsulation layer located on the side of the organic encapsulation layer opposite to the substrate layer.

[0012] The partition groove extends through the first passivation layer and at least part of the planarization layer. The side of the first passivation layer closest to the partition groove protrudes from the side of the planarization layer closest to the partition groove. The second passivation layer and the first inorganic encapsulation layer both cover the bottom and sidewalls of the partition groove. The organic encapsulation layer fills the partition groove.

[0013] In one possible implementation, in the stretchable device provided in the embodiments of this disclosure, the auxiliary cathode is a closed structure surrounding the effective light-emitting area.

[0014] In one possible implementation, the stretchable device provided in the embodiments of this 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 in the overlapping area; the annular metal partition structure is electrically connected to the auxiliary cathode.

[0015] The cathode includes: a first cathode portion located within the annular metal partition structure and electrically connected to the annular metal partition structure, and a second cathode portion located on the side of the annular metal partition structure opposite to the substrate layer.

[0016] In one possible implementation, in the stretchable device provided in the embodiments of this 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 through-hole penetrating the pixel defining layer, the first cathode portion is electrically connected to the first conductive structure in contact, and the orthogonal projection area of ​​the bottom surface of the second conductive structure near the substrate layer on the substrate layer is greater than the orthogonal projection area of ​​the top surface of the first conductive structure away from the substrate layer on the substrate layer.

[0017] In one possible implementation, in the stretchable device provided in the embodiments of this disclosure, the material of the pixel defining layer is an inorganic material.

[0018] In one possible implementation, the stretchable device provided in the embodiments of this 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 planarization layer, a first metal layer located between the barrier layer and the planarization layer, an interlayer insulating layer located between the first metal layer and the planarization layer, and at least one second metal layer located between the interlayer insulating layer and the planarization layer;

[0020] The portion of the first power line located in the island region is disposed in the first metal layer, and the portion of the first power line located in the bridge region includes a signal line disposed in at least one second metal layer. The auxiliary cathode is electrically connected to a first transition portion located in the second metal layer through a via penetrating the planarization layer, and the first transition portion is electrically connected to the first power line located in the first metal layer through a via penetrating the interlayer insulation layer.

[0021] The portion of the second power line located in the island region is disposed in the first metal layer, and the portion of the second power line located in the bridge region includes a signal line disposed in at least one second metal layer. The anode is electrically connected to a second transition portion located in the second metal layer through a via penetrating the planarization layer, and the second transition portion is electrically connected to the second power line located in the first metal layer through a via penetrating the interlayer insulation layer.

[0022] In one possible implementation, in the stretchable device provided in the embodiments of this 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 one possible implementation, in the stretchable device provided in the embodiments of this 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 one possible implementation, the stretchable device provided in the embodiments of this disclosure has an opening ratio greater than 50%.

[0025] Accordingly, this disclosure also provides a beauty device, which includes a body and a stretchable device that fits into the body, wherein the stretchable device is the stretchable device described above according to the embodiments of this disclosure.

[0026] In one possible implementation, in the beauty device provided in the embodiments of this disclosure, the beauty device is a face mask, and the substrate layer of the stretchable device is located away from the body.

[0027] In one possible implementation, the beauty device provided in the embodiments of this disclosure further includes a protective film attached to the side of the stretchable device away from the body, and the protective film has through holes corresponding to the hole area of ​​the stretchable device.

[0028] In one possible implementation, in the beauty device provided in the embodiments of this disclosure, the body is an elastic support membrane with the function of absorbing beauty liquid.

[0029] In one possible implementation, the beauty device provided in the embodiments of this disclosure has a mouth opening, a nose opening, and an eye opening on its main body.

[0030] In one possible implementation, in the beauty device provided in the embodiments of this disclosure, the beauty device is a face mask, the body is a curved structure, the stretchable device is attached to the curved structure, and the substrate layer of the stretchable device is close to the body.

[0031] In one possible implementation, the beauty device provided in the embodiments of this disclosure further includes an elastic support film located between the substrate layer of the body and the stretchable device, wherein the elastic support film is provided with through holes corresponding to the hole area of ​​the stretchable device.

[0032] In one possible implementation, the beauty device provided in the embodiments of this disclosure has an eye opening on its main body.

[0033] In one possible implementation, in the beauty device provided in the embodiments of this disclosure, two stretchable devices are attached to the body, and the two stretchable devices are symmetrically arranged along the line connecting the nose and the center of the eyebrows.

[0034] In one possible implementation, in the beauty device provided in the embodiments of this disclosure, the number of holes in the stretchable device near the line connecting the nose and the center of the eyebrows is less than the number of holes away from the line connecting the nose and the center of the eyebrows.

[0035] Accordingly, this disclosure also provides a method for manufacturing a stretchable device, used to manufacture the stretchable device provided in this disclosure, the method comprising:

[0036] Multiple island regions, multiple hole regions, and multiple bridge regions are formed on the substrate layer, and 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 region in a direction away from the substrate layer; wherein, the island region includes an effective light-emitting area and an overlapping area located around 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 disposed in the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode. Attached Figure Description

[0038] Figure 1 is a schematic diagram of a planar structure of the stretchable device provided in this disclosure;

[0039] Figure 2 is a partial cross-sectional view of the stretchable device shown in Figure 1.

[0040] Figure 3 is a schematic diagram of another planar structure of the stretchable device provided in this disclosure;

[0041] Figure 4 is a partial cross-sectional view of the stretchable device shown in Figure 3.

[0042] Figure 5 is a schematic diagram of another planar structure of the stretchable device provided in this disclosure;

[0043] Figure 6 is a schematic diagram showing the alignment of the mask for fabricating the light-emitting layer and the mask for fabricating the cathode.

[0044] Figure 7 is a schematic flowchart of a method for manufacturing a stretchable device according to an embodiment of this disclosure;

[0045] Figures 8A-8P are schematic diagrams of the structure of a stretchable device provided in the present disclosure during the manufacturing process;

[0046] Figure 9 is a structural schematic diagram of a beauty device provided in this disclosure;

[0047] Figure 10 is a schematic diagram of another structure of the beauty device provided in this disclosure;

[0048] Figure 11 is a planar schematic diagram of the main body in Figure 9;

[0049] Figure 12 is a planar schematic diagram of two stretchable devices attached to the body in Figures 9 and 10. Detailed Implementation

[0050] 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. Furthermore, the embodiments and features in the embodiments of this disclosure can be combined with each other without conflict. 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.

[0051] 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 "comprising" or "including," and similar terms as used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "inner," "outer," "upper," and "lower" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0052] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0053] Currently, beauty products using LED beads as the light source can be distributed across the product due to the nature of LEDs as beads. The inventors of this case conducted market research on beauty products and found significant price differences based on the number of LED beads. The price increases with the number of LED beads, with the selling point being the significantly improved uniformity of illumination. This is because LED beads are characterized by high brightness, and beauty treatments typically require energy levels within a certain range; exceeding this range can cause harm to the body. To ensure energy levels remain within limits, LED beads are usually high-brightness, small-area light spots, resulting in poor light uniformity. While increasing the number of LED beads can improve uniformity, LED beads are point light sources and cannot be stretched, making it difficult to resolve the uniformity issues caused by point light sources.

[0054] In view of this, in order to solve the problem of poor light uniformity in current beauty products (e.g., beauty products using LED beads as light sources have poor light uniformity), this disclosure provides a stretchable device, as shown in Figures 1-4. Figure 1 is a planar structural schematic diagram of the stretchable device provided in this disclosure, Figure 2 is a partial cross-sectional structural schematic diagram of the stretchable device shown in Figure 1, Figure 3 is another planar structural schematic diagram of the stretchable device provided in this disclosure, and Figure 4 is a partial cross-sectional structural schematic diagram of the stretchable device shown in Figure 3. The stretchable device includes a substrate layer 1 and a [missing information - likely a component or element] disposed on the substrate layer 1. The device comprises multiple island areas Q1 separated from each other, a hole area Q2 disposed between adjacent island areas Q1, and a bridge area 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 transmitting tensile force, 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 bears large deformations to achieve stress / strain isolation design of the island area Q3 device and realize the tensile deformation capability of the island-bridge structure during the stretching process.

[0055] The stretchable device provided in this embodiment can achieve high stretchability by adopting an island-bridge structure design. Since at least one island area is provided with only 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 related technologies, redundant light-emitting units can be removed to reduce the space occupied by pixel gaps, improve the aperture ratio of the stretchable device, improve the light uniformity of beauty products, and thus improve the beauty effect. In addition, since the stretchable device has multiple hole areas, the breathability of beauty products is better when applied to beauty products.

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

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

[0058] When the stretchable device provided in this disclosure is applied to beauty products, it can be passively driven (PM). For example, the first power line (e.g., VSS) of the bridge region transmits a signal to the cathode through the auxiliary cathode, and the second power line (e.g., VDD) of the bridge region transmits a signal to the anode. Since the auxiliary cathode in this disclosure is arranged around the effective light-emitting area, the auxiliary cathodes can be distributed or a ring of auxiliary cathodes can be designed around the effective light-emitting area. When the cathode is made using a cathode mask, no matter which side the mask is biased towards, it will be aligned with at least part of the auxiliary cathode. Therefore, the pixel space occupied by the mask due to the misalignment can be reduced, thereby further improving the aperture ratio of the stretchable device, thereby further improving the light uniformity of the beauty product. In addition, the high aperture ratio can ensure the energy demand per unit area of ​​the skin and ensure that the local heat is not too high and burns the skin.

[0059] The anode 2, light-emitting layer 3, and cathode 4 in this disclosure constitute an OLED light-emitting device. The stretchable device using this OLED light-emitting device, when applied to the phototherapy effect of beauty products, can improve the uniformity of phototherapy brightness. Furthermore, the stretchable device can be stretched into the required shape according to the beauty product. For example, when using the stretchable device of this disclosure to manufacture a stretchable face mask with phototherapy effects, it can be stretched according to the needs of different faces, ensuring a perfect fit. When using the stretchable device of this disclosure to manufacture a face mask with phototherapy effects, it can be stretched into the shape of the face mask and then fitted inside. Therefore, the stretchable device provided by this disclosure has excellent shape adaptability to various beauty products, expanding the applications of beauty products.

[0060] In some embodiments, as shown in Figures 1-4, the light emission color of the sub-pixel of island area Q1 can be red, or of course green or blue, and the light emission color of the sub-pixel can be designed according to aesthetic requirements.

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

[0062] Specifically, as shown in Figures 2 and 4, the substrate layer 1 and the film layers thereon can be disposed on a glass substrate that provides support. After each film layer is fabricated, 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 aperture region Q2 in this embodiment can completely penetrate the stretchable device. Alternatively, the aperture region Q2 can also penetrate at least a portion of the film layer and a portion of the substrate layer 1 on the stretchable device. This embodiment uses the example of the aperture region Q2 completely penetrating the stretchable device.

[0064] In some embodiments, in the stretchable device provided in this disclosure, as shown in Figures 1 and 2, the auxiliary cathode 5 includes a plurality of overlapping portions 51 located at each corner of the overlapping area Q12, and the cathode 4 is electrically connected to at least one overlapping portion 51. The auxiliary cathode 5 is thus designed with four corners, as shown in Figure 6. Figure 6 is a schematic diagram of the alignment of the mask 30 for fabricating the light-emitting layer 3 and the mask 40 for fabricating the cathode. It can be seen that regardless of which side the cathode mask 40 is biased towards, it will align with at least one overlapping portion 51. Therefore, the pixel space occupied by the mask 40 due to alignment deviation can be reduced, and the aperture ratio of the stretchable device can be improved.

[0065] In some embodiments, 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 area Q12, and the cathode 4 is electrically connected to at least one overlapping portion 51. By providing overlapping portions 51 at the center of each side of the overlapping area Q12, the pixel space occupied by the mask due to alignment deviation can be reduced, thereby improving the aperture ratio of the stretchable device.

[0066] It should be noted that the number of overlapping parts 51 is not limited to the four shown in Figures 1 and 5, but can be more, as long as they are set around the effective light-emitting area Q11; the position of the overlapping parts 51 is not limited to the position shown in Figures 1 and 5, but can be distributed on each side of the overlapping area Q12.

[0067] In some embodiments, as shown in FIG2, the stretchable device provided in this disclosure 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 overlap portion 51 through a via penetrating the pixel defining layer 6. This allows signals to be transmitted to the overlap portion 51 and the cathode 4 via the second power line (VSS) of the bridge region, thus enabling the transmission of electrical signals.

[0068] In some embodiments, as shown in FIG2, the pixel defining layer 6 has pixel openings to expose the anode 2, and the light-emitting layer at least covers the pixel openings. The material of the pixel defining layer 6 can be an organic material, such as resin.

[0069] In some embodiments, as shown in Figures 1 and 2, the island region Q1 further includes a transition region Q13 located around the overlapping 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. Since the light-emitting layer 3 and cathode 4 near the aperture region Q2 are easily invaded by water and oxygen, 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 aperture region Q2 from the cathode 4 located within the sub-pixels. This can prevent water and oxygen from invading the light-emitting layer 3 and cathode 4 in the sub-pixels from the aperture region Q2, thereby ensuring the normal light emission of the OLED device.

[0070] In some embodiments, the stretchable device provided in this disclosure, as shown in Figures 1 and 2, further includes: a planarization layer 7 located between the substrate layer 1 and the anode 2; a first passivation layer 8 located between the planarization 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. 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 composed of the first inorganic encapsulation layer 11, the organic encapsulation layer 10, and the second inorganic encapsulation layer 12 can reduce the intrusion of moisture from the external environment into the OLED light-emitting device of the sub-pixel, thereby reducing the probability of light-emitting device failure.

[0071] In some embodiments, in the stretchable device provided in this disclosure, as shown in Figures 1 and 2, the partition groove U1 penetrates the first passivation layer 8 and at least part of the planarization layer 7. The side of the first passivation layer 8 closest to the partition groove U1 protrudes from the side of the planarization layer 7 closest to 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. Thus, the portion of the first passivation layer 8 protruding relative to the planarization layer 7, together with the sidewall of the planarization layer 7 and the bottom near the substrate layer 1, can form an undercut partition structure, ensuring that the cathode 4 is disconnected at this location, thereby achieving the function of blocking water and oxygen.

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

[0073] It should be noted that the embodiment disclosed herein takes the setting of one partition groove U1 as an example. Of course, in 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 this disclosure, as shown in Figures 1 and 2, further includes: a barrier layer 13 located between the substrate layer 1 and the planarization layer 7; a first metal layer 14 (e.g., a Gate layer) located between the barrier layer 13 and the planarization layer 7; an interlayer insulating layer 15 located between the first metal layer 14 and the planarization layer 7; and at least one second metal layer 16 (e.g., an SD layer) located between the interlayer insulating layer 15 and the planarization layer 7; wherein,

[0075] The barrier layer 13 is made of inorganic material. The edge of the first passivation layer 8 is in contact with the edge of the barrier layer 13. This allows the planarization layer 7 to be enclosed inside the inorganic layer, preventing moisture from entering the planarization layer 7 and being transmitted into the light-emitting device.

[0076] In some embodiments, in the stretchable device provided in this disclosure, as shown in FIG2, the boundary of the organic encapsulation layer 10 near the hole region 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 boundaries of the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 on the substrate layer 1, thereby the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 encapsulate the organic encapsulation layer 10 to prevent moisture from entering the organic encapsulation layer 10. At the position of the island region Q1 near the hole region Q2, the interlayer insulating layer 15 is recessed relative to the barrier layer 13, that is, the interlayer insulating layer 15 and the barrier layer 13 are recessed in the island region. A stepped structure is formed near the hole area Q2 in the island area Q1. The boundary of the planarization layer 7 near the hole area Q2 is located between the boundary of the interlayer insulation 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 location of the island area Q1 near the hole area Q2. The orthogonal projection boundary of the first passivation layer 8 and the barrier layer 13 on the substrate layer 1 is located within the orthogonal 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. The first passivation layer 8 is in direct contact with the substrate layer 1. In this way, the planarization layer 7 can be wrapped inside each inorganic layer to prevent external water and oxygen from entering the planarization layer 7, which can further block water and oxygen.

[0077] In some embodiments, as shown in FIG2, in the stretchable device provided in this disclosure, the insulating layer of the bridge region Q3 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. The interlayer insulating layer 15, the pixel defining layer 6, and the organic encapsulation layer 10 are removed. This reduces the number of inorganic layers in the bridge region Q3 and lowers its height, preventing the risk of breakage of the bridge region Q3 due to excessive inorganic layers during stretching. Of course, the insulating layers of the bridge region Q3 can be selected according to the stretching requirements.

[0078] In some embodiments, as shown in FIG1 and FIG2, the stretchable device provided in this disclosure further includes a first power line VSS and a second power line VDD disposed 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 island region Q1 is disposed in the first metal layer 14. The portion of the first power line VSS located in bridge region Q3 includes signal lines disposed in at least one second metal layer 16. The auxiliary cathode 5 is electrically connected to the first adapter 161 located in the second metal layer 16 through a via penetrating the second passivation layer 9, the first passivation layer 8, and the planarization layer 7. The first adapter 161 is electrically connected to the first power line VSS located in the first metal layer 14 through a via penetrating the interlayer insulating layer 15. In this way, the first power line VSS transmits the cathode signal to the cathode 4 through the first adapter 161 and the auxiliary cathode 5. Furthermore, by routing the first power line VSS located in island region Q1 through the first metal layer 14, it is possible to prevent the first power line VSS from entering the bridge region Q3 from the edge of the planarization layer 7, which would cause water and oxygen to enter the planarization layer 7 and thus cause the light-emitting layer 3 to be eroded by water and oxygen.

[0080] The portion of the second power line VDD located in island region Q1 is disposed in the first metal layer 14. The portion of the second power line VDD located in bridge region Q3 includes a signal line disposed in at least one second metal layer 16. The anode 2 is electrically connected to the second adapter 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 planarization layer 7. The second adapter 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 adapter portion 162. By routing the second power line VDD located in island region Q1 through the first metal layer 14, it is possible to prevent the second power line VDD from entering the bridge region Q3 from the edge of the planarization layer 7, which would cause external water and oxygen to enter the planarization layer 7 and thus cause the light-emitting layer 3 to be eroded by water and oxygen.

[0081] In some embodiments of this disclosure, the first power line VSS and the second power line VDD can be led out to the frame area of ​​the stretchable device, and then electrical signals can be transmitted to the first power line VSS and the second power line VDD through the external circuit board by bonding with 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 jumpered from the first metal layer 14 to the second metal layer near the bridge area Q3, so that the first power line VSS and the second power line VDD in the bridge area Q3 can be routed in the second metal layer 16.

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

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

[0085] In some embodiments, splitting the first power line VSS and the second power line VDD into multiple traces can be achieved by increasing the number of bridge areas without changing the number of trace layers. For example, a power line with a width of 20μm and a single-layer trace originally constitutes one bridge. Now, one power line can be split into four bridges with a width of 5μm each. In this way, the total width of the power line remains unchanged, and splitting it into multiple bridges can increase the stretching capacity. Alternatively, it can be achieved by increasing the number of trace layers without changing the number of bridge areas. For example, a power line with a width of 20μm and a single-layer trace originally constitutes one bridge. Now, the single-layer trace can be designed as a double-layer trace, with each layer having a width of 10μm. In this way, the total width of the power line remains unchanged, and splitting it into double-layer traces can also increase the stretching capacity.

[0086] In some embodiments, in the stretchable device provided in this 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 signal line where bridge region Q3 is located in the second metal layer 16) × the number of signal line layers × the number of bridge regions between adjacent island regions. For example, in Figure 2, if the signal line width of bridge region Q3 is a single value, the number of signal line layers is 1, and the number of bridge regions is 2, then the width of a single signal line must be greater than 20 μm to ensure that the sum of the widths of the first power line VSS and the second power line VDD is greater than 40 μm. If the number of signal line layers is 2 and the number of bridge regions is 4, the width of a single signal line only needs to be greater than 5 μm. Therefore, the width of a single signal line can be determined based on the number of signal line layers and the number of bridge regions.

[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 relevant parameters of the number of signal line layers, 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 this disclosure. All of them adopt the stretchable device structure shown in Figure 2.

[0088] Table 1

[0089] Table 2

[0090] Table 3

[0091] Table 4

[0092] As can be seen from the table above, this disclosure allows for the adjustment of the number of signal line layers, the number of bridge areas, the signal line width, the island length, and the island spacing to regulate the aperture ratio and stretching amount of the stretchable device, thereby obtaining a stretchable device with high stretching amount and high aperture ratio, and improving the cosmetic effect.

[0093] In some embodiments, as shown in Figures 3 and 4, the auxiliary cathode 5 is a closed structure surrounding the effective light-emitting area Q11. This annular closed structure design of the auxiliary cathode 5 ensures alignment with at least one side of the auxiliary cathode 5, regardless of which side the cathode mask is biased towards. Therefore, it reduces the pixel space occupied by the mask due to alignment deviations and improves the aperture ratio of the stretchable device.

[0094] In some embodiments, the stretchable device provided in this disclosure, as shown in FIG3 and FIG4, further includes: a planarization 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 overlap area 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 within and electrically connected to the annular metal partition structure U2, and a second cathode portion 42 located on the side of the annular metal partition structure U2 away from the substrate layer 1. In this embodiment, the annular metal partition structure U2 is provided in the overlap area Q12, and the cathode 4 is disconnected at the location of the annular metal partition structure U2. The water-blocking properties of the metal are utilized to improve encapsulation capabilities. Furthermore, the first cathode portion 41 located within the annular metal partition structure U2 is electrically connected to the annular metal partition structure U2, and the annular metal partition structure U2 is electrically connected to the auxiliary cathode 5. This achieves electrical connection between the cathode 4 and the auxiliary cathode 5 in the effective light-emitting area Q11, enabling cathode signal conduction. By directly using the annular metal partition structure U2 electrically connected to the auxiliary cathode 5 in the overlap area Q12, the partition groove U1 shown in Figure 2 can be eliminated, allowing for a larger effective light-emitting area Q11. This reduces the width of the side frame structure, decreases the space occupied by the encapsulation frame, and further improves the aperture ratio.

[0096] In some embodiments, as shown in Figures 3 and 4, the annular metal partition structure U2 in the stretchable device provided in this disclosure 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 through-hole penetrating the pixel defining layer 6. The first cathode portion 41 is in contact with the first conductive structure 17. The orthogonal projection area of ​​the bottom surface of the second conductive structure 18 near the substrate layer 1 on the substrate layer 1 is greater than the orthogonal projection area of ​​the top surface of the first conductive structure 17 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, by using the annular metal partition structure U2 as an intermediate conductive layer to connect the cathode 4 and the auxiliary cathode 5, the resistance of the cathode 5 can be further reduced and the luminous efficiency improved.

[0097] In some embodiments, as shown in FIG4, the material of the first conductive structure 17 can be, but is not limited to, Al, and the material of the second conductive structure 18 can be, but is not limited to, Ti. In this way, the different etching rates of Al and Ti can be used to form an undercut annular metal partition structure U2.

[0098] In some embodiments, as shown in FIG4, the material of the pixel defining layer 6 in the stretchable device provided in the present disclosure is an inorganic material. Since inorganic materials can form a layer structure through sputtering and vapor deposition processes, compared with organic materials which need to be coated to form a layer structure, inorganic materials can be made thinner, avoiding the problem that the first conductive structure 17 and the auxiliary cathode 5 cannot be connected due to the vias of the pixel defining layer 6 being too deep.

[0099] Optionally, the inorganic material used to fabricate 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 pixel defining layer 6 shown in Figure 4 is made of inorganic material, and inorganic materials have good water resistance, this embodiment does not need to fabricate 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 stretch performance.

[0101] In some embodiments, the stretchable device provided in the present disclosure, as shown in FIG4, further includes: a barrier layer 13 located between the substrate layer 1 and the planarization layer 7; a first metal layer 14 (e.g., a Gate layer) located between the barrier layer 13 and the planarization layer 7; an interlayer insulating layer 15 located between the first metal layer 14 and the planarization layer 7; at least one second metal layer 16 (e.g., an SD layer) located between the interlayer insulating layer 15 and the planarization layer 7; 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.

[0102] It should be noted that the functions and roles of each of the above-mentioned membrane layers are explained in the relevant descriptions in the structure shown in Figure 2, and will not be elaborated here.

[0103] In some embodiments, as shown in FIG3 and FIG4, the stretchable device provided in the present disclosure further includes a first power line VSS and a second power line VDD disposed in the bridge region Q3 and extending to the island region Q1 and electrically connected to the sub-pixel. 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 FIG1 and FIG2. For details, please refer to the relevant descriptions in the embodiments shown in FIG1 and FIG2. This embodiment will not be repeated here.

[0104] In some embodiments, in the stretchable device provided in this disclosure, as shown in FIG4, the orthographic projection of the organic encapsulation layer 10 on the substrate layer 1 is 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, thereby the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 encapsulate the organic encapsulation layer 10, preventing moisture from entering the organic encapsulation layer 10; at the position of the island area Q1 near the hole area Q2, the boundaries of the pixel defining layer 6 and the planarization layer 7 near the hole area Q2 are recessed relative to the boundary of the interlayer insulating layer 15, and the orthographic projection boundaries of the pixel defining layer 6 and the planarization 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 in contact with the interlayer insulating layer 15, so that the planarization layer 7 can be encapsulated inside each inorganic layer, preventing external water and oxygen from entering the planarization layer 7, and further blocking water and oxygen.

[0105] In some embodiments, in the stretchable device provided in the present disclosure, as shown in FIG4, the distance from the top surface of the partition structure U2 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. This ensures that the cathode 4 is disconnected. However, if the partition structure U2 with a certain height is too close to the hole region Q2, it may 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 near the hole region Q2 can be greater than the distance between the boundary of the organic encapsulation layer 10 near the hole region Q2 and the hole region Q2, thereby ensuring the encapsulation effect.

[0106] In some embodiments, as shown in FIG4, in the stretchable device provided in this disclosure, the insulating layer of the bridge region Q3 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. The interlayer insulating layer 15, the pixel defining layer 6, and the organic encapsulation layer 10 are removed. This reduces the inorganic layer of the bridge region Q3 and lowers its height, preventing the risk of breakage of the bridge region Q3 due to excessive inorganic layers during stretching. Of course, the insulating layer of the bridge region Q3 can be selected based on the stretching requirements.

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

[0108] In some embodiments of this disclosure, the anode may be a single-layer metal thin film, or it may include a three-layer stacked structure of transparent conductive film / metal thin film / transparent conductive film. The transparent conductive film may be made of indium tin oxide (ITO) or indium zinc oxide (IZO), and the metal thin film may be made of metals such as Al, Ag, or Cu.

[0109] In some embodiments, the cathode material in this disclosure may 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 this disclosure can 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, or a micro light-emitting diode (Micro LED) or a mini light-emitting diode (mini LED). This disclosure uses an OLED as an example of a light-emitting device.

[0111] Based on the same inventive concept, this disclosure also provides a method for manufacturing the above-mentioned stretchable device, used to manufacture the stretchable device provided in the embodiments of this disclosure, as shown in FIG7, including:

[0112] S701. Multiple island regions, multiple hole regions, and multiple bridge regions are formed on the substrate layer, and at least one island region includes a sub-pixel;

[0113] S702. An anode, a light-emitting layer, and a cathode are formed in the island region in a direction away from the substrate layer; wherein, the island region includes an effective light-emitting region and an overlapping region located outside the effective light-emitting region, the anode and the light-emitting layer cover the effective light-emitting region, the cathode covers the effective light-emitting region and at least part of the overlapping region, and the overlapping region includes an auxiliary cathode disposed in the same layer as the anode, and the cathode and the auxiliary cathode are electrically connected.

[0114] The processes for forming each film layer in this disclosure may include patterning processes and photolithography processes. The patterning process may include film deposition, photoresist coating, mask exposure, development, etching, and photoresist stripping. The photolithography process may include film coating, mask exposure, and development. The evaporation, deposition, coating, and plating processes used are all mature preparation processes in related technologies.

[0115] The following section uses the stretchable device shown in Figure 2 as an example to illustrate the manufacturing process of the stretchable device shown in Figure 2, which may include the following steps:

[0116] (1) Taking the substrate layer 1 as an example, which includes a flexible layer structure, the substrate layer 1 is divided into island area Q1, hole area Q2 and bridge area Q3. The substrate layer 1 is formed on the glass substrate 100, a barrier layer 13 is formed on the substrate layer 1, a metal thin film is deposited on the barrier layer 13, and the metal thin film is patterned by a patterning process. A first metal layer 14 (Gate layer) is formed on the barrier layer 13. The first metal layer 14 is used to carry the first power line VSS and the second power line VDD located in the island area Q1, as shown in Figure 8A.

[0117] (2) An inorganic material thin film is deposited on the first metal layer 14, and the inorganic material thin film is patterned to form an interlayer insulating layer 15, which covers the island area Q1, as shown in Figure 8B.

[0118] (3) A metal thin film is deposited on the interlayer insulating layer 15, and the metal thin 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 adapter 161 and a second adapter 162 for electrical connection with 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 region Q3, as shown in FIG8C.

[0119] (4) A flat film of organic material is coated on the second metal layer 16. A flat layer 7 is formed in the island area Q1 and the bridge area Q3 by masking, exposure and development process. The flat layer 7 is developed away at the positions of the first transition part 161, the second transition part 162 and the hole area Q2, as shown in Figure 8D.

[0120] (5) An inorganic insulating material film is deposited on the planarization layer 7, the inorganic insulating material film is patterned, the inorganic insulating material film in the hole region Q2 is removed, and a groove is formed in the transition region Q13 of the island region Q1 to penetrate the inorganic insulating material film, forming the first passivation layer 8, as shown in Figure 8E.

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

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

[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 part 161 through a via penetrating the second passivation layer 9, the first passivation layer 8 and the planarization layer 7. The anode 2 is electrically connected to the second transition part 162 through a via penetrating the second passivation layer 9, the first passivation layer 8 and the planarization layer 7, as shown in Figure 8H.

[0124] (9) A pixel defining film is coated on the anode 2. A pixel defining layer 6 is formed in the island area Q1 through a masking, exposure and development process. The pixel defining layer 6 in the island area Q1 has a pixel opening. The pixel defining film inside the pixel opening is developed away, exposing the surface of the anode 2. The pixel defining film has a via corresponding to the position of the auxiliary cathode 5. The pixel defining film is developed away corresponding to the positions of the hole area Q2 and the bridge area Q3, as shown in Figure 8I.

[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 connected to the anode 2. The cathode 4 is disconnected at the partition groove U1 position. The cathode 4 is electrically connected to the auxiliary cathode 5 through the through hole penetrating the pixel defining layer 6. The cathode 4 is developed away at the hole area Q2 position and the bridge area Q3 position, as shown in Figure 8J.

[0126] (11) A first inorganic encapsulation film 11' is deposited on the cathode 4, as shown in Figure 8K.

[0127] (12) An organic encapsulation film is formed on the first inorganic encapsulation film 11'. The organic encapsulation film is exposed and developed to form an organic encapsulation layer 10 in the island region Q1. All organic encapsulation films in the bridge region Q3 and the hole region Q2 are removed, as shown in Figure 8L.

[0128] (13) A second inorganic encapsulation film 12' is deposited on the organic encapsulation layer 10, as shown in Figure 8M.

[0129] (14) The second inorganic encapsulation film 12', the first inorganic encapsulation film 11' and the second passivation layer 9 are patterned. A through hole is formed in the hole region Q2, penetrating the second inorganic encapsulation film 12', the first inorganic encapsulation film 11' and the second passivation layer 9. The first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 are formed in the island region Q1. The second inorganic encapsulation film 12', the first inorganic encapsulation film 11' and the second passivation layer 9 are retained in the bridge region Q3, as shown in Figure 8N.

[0130] (15) Using the second inorganic encapsulation layer 12, the first inorganic encapsulation film 11 and the second passivation layer 9 as a mask, the substrate layer 1 is patterned, and the substrate layer 1 with the hole area Q2 is removed, as shown in Figure 8O.

[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 Figure 8P.

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

[0133] It should be noted that the manufacturing method of the stretchable device shown in Figure 4 is similar to the above manufacturing method. The difference is that Figure 4 makes a ring-shaped metal partition structure U2 made of metal material above the auxiliary cathode 5. It is sufficient to ensure 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, this embodiment of the invention also provides a beauty device, as shown in Figures 9 and 10, which includes a body 20 and a stretchable device 31 that fits into the body 20. The stretchable device 31 is the stretchable device provided in this embodiment of the invention.

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

[0136] It should be noted that Figures 9 and 10 are only for illustrative purposes to show the structure of the beauty device. Only a portion of the film layer of the stretchable device 31 is shown. For the specific structure of the stretchable device 31, please refer to the structures shown in Figures 2 and 4 above.

[0137] In some embodiments, as shown in FIG9, the beauty device provided in the present disclosure can be a face mask, and the substrate layer 1 of the stretchable device 31 is away from the body 20. Specifically, the body 20 can be shaped like a human face, and the body 20 is an elastic support film (stretchable). By attaching the stretchable device 31 to the body 20, and then attaching the side of the body 20 away from the stretchable device 31 to the skin 32 of the human face, and stretching the face mask according to the size of the face so that the face mask can fit perfectly with different faces, the light emitted by the stretchable device 31 is evenly projected onto the face to perform phototherapy on the face and achieve a beauty effect. Due to the high opening ratio of the stretchable device 31, the face mask can fit tightly to the face without causing skin burns.

[0138] In some embodiments, since the substrate layer is relatively thin, in order to protect the substrate layer from damage, the beauty device provided in this disclosure embodiment, 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 has through holes corresponding to the hole area Q2 of the stretchable device 31. In this way, the protective film 50 can protect the stretchable device 31 on the one hand, and ensure the breathability of the mask on the other hand.

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

[0140] In some embodiments, as shown in FIG9, the body 20 of the beauty device provided in the present disclosure is an elastic support membrane with the function of absorbing beauty liquid, so that beauty liquid can be used for beauty treatment at the same time during phototherapy.

[0141] In some embodiments, in the beauty device provided in the present disclosure, as shown in FIG11, FIG11 is a plan view of the body 20 in FIG9. The 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. Apart from these openings, the other parts have the same stretchable device structure.

[0142] In some embodiments, as shown in FIG10, the beauty device provided in the present disclosure can be a face mask, the body 20 is a curved structure, and the stretchable device 31 is attached to the curved structure, with the substrate layer 1 of the stretchable device 31 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 clipped onto the 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 face mask according to the shape of the face mask. Then, the side of the substrate layer 1 of the stretchable device 31 facing away from the light-emitting device is attached to the inside of the face mask. Then, the light emitted by the stretchable device 31 is evenly projected onto the face to perform phototherapy on the face and achieve a beauty effect. Due to the high opening ratio of the stretchable device 31, there will be no problem of skin burns.

[0143] In some embodiments of the beauty device provided in this disclosure, as shown in FIG10, an elastic support film 60 is further included between the body 20 and the substrate layer 1 of the stretchable device 31. The elastic support film 60 is provided with through holes corresponding to the hole area of ​​the stretchable device 31. In this way, the side of the substrate layer 1 away from the light-emitting device is bonded to the inside of the mask through the elastic support film 60, which also ensures the breathability of the mask.

[0144] In some embodiments, as shown in FIG10, the main body 20 is provided with an eye opening, which can be provided separately for each of the two eyes, or a long strip opening that runs through both eyes can be provided continuously.

[0145] In some embodiments, the beauty device provided in this 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 beauty device provided in this disclosure, two stretchable devices 31 can be attached to the body 20 of the beauty device shown in Figures 9 and 10, as shown in Figure 12. Figure 12 is a planar schematic diagram of the body 20 in Figures 9 and 10 with two stretchable devices 31 attached. The two stretchable devices 31 are symmetrically arranged along the line connecting the nose and the center of the eyebrows, that is, the beauty device can adopt a dual-screen splicing method. Since the stretching ratio requirement is lower at the line connecting the nose and the center of the eyebrows (the dotted circle) than at the line far from the nose and the center of the eyebrows (the rest of the positions except the dotted circle), the number of holes in the stretchable device 31 at the line connecting the nose and the center of the eyebrows (the dotted circle) can be set to be less than the number of holes at the line far from the nose and the center of the eyebrows (the rest of the positions except the dotted circle), thereby further improving the opening ratio.

[0147] Of course, in some embodiments, the splicing screen shown in Figure 12 may also have the same hole density at each position. Due to the design of the splicing screen, the demand for stretching ratio at the dashed circle is low. When stretching, the actual stretching amount at the dashed circle is relatively small compared to the other areas. Therefore, the decrease in aperture ratio after stretching at the dashed circle is not so large, and it is not easy to be damaged.

[0148] This disclosure provides a stretchable device, its manufacturing method, and a beauty device. The high aperture ratio of the stretchable device improves the light uniformity of beauty products, and the high aperture ratio ensures the energy demand per unit area of ​​the skin, ensuring that local heat is not excessive and will not burn the skin, thereby improving the beauty effect. In addition, since the stretchable device has multiple pore areas, the beauty products have good breathability when applied to them. Furthermore, the stretchable device provided by this disclosure has good shape adaptability to various beauty products, expanding the applications of beauty products.

[0149] 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.

[0150] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of the embodiments of this disclosure. Therefore, if these modifications and variations to the embodiments of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include these modifications and variations.

Claims

1. A stretchable device, wherein, The substrate layer and a plurality of island regions arranged on the substrate layer, a hole region arranged between adjacent island regions, and a bridge region connecting adjacent island regions, at least one of the island regions comprising a sub-pixel; The island region comprises an anode, a light-emitting layer and a cathode arranged on the substrate layer, the island region comprises an effective light-emitting region and a lap region located at the periphery of the effective light-emitting region, the anode and the light-emitting layer cover at least the effective light-emitting region, and the cathode covers the effective light-emitting region and at least part of the lap region, the lap region comprises an auxiliary cathode arranged in the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode.

2. The stretchable device of claim 1, wherein, The auxiliary cathode comprises a plurality of lap portions located at each corner of the lap region, and the cathode is electrically connected to at least one of the lap portions.

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

4. The stretchable device of claim 2 or 3, wherein, Further comprising a pixel defining layer between the anode and the light-emitting layer, and the cathode is electrically connected to the lap portion through a via hole penetrating the pixel defining layer.

5. The stretchable device of any one of claims 2-4, wherein, The island region further comprises a transition region located at the periphery of the lap region, the transition region is provided with an annularly closed partition groove, and the cathode is disconnected at the partition groove.

6. The stretchable device of claim 5, wherein, Further comprising: a flat layer between the substrate layer and the anode, a first passivation layer between the flat layer and the anode, a second passivation layer between the first passivation layer and the anode, a first inorganic encapsulation layer on the side of the cathode away from the substrate layer, an organic encapsulation layer on the side of the first inorganic encapsulation layer away from the substrate layer, and a second inorganic encapsulation layer on the side of the organic encapsulation layer away from the substrate layer; The partition groove penetrates the first passivation layer and at least part of the flat layer, the side of the first passivation layer close to the partition groove protrudes from the side of the flat layer close to the partition groove, the second passivation layer and the first inorganic encapsulation layer cover the bottom and sidewall of the partition groove, and the organic encapsulation layer fills the partition groove.

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

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

9. The stretchable device of claim 8, wherein, The annular metal partition structure comprises a first conductive structure between the pixel defining layer and the second cathode part, and a second conductive structure between the first conductive structure and the second cathode part; the first conductive structure is electrically connected with the auxiliary cathode through a via hole penetrating through the pixel defining layer, the first cathode part is in contact with the first conductive structure, and the second conductive structure is close to the bottom surface of the substrate layer, and the area of the orthographic projection of the second conductive structure on the substrate layer is greater than the area of the orthographic projection of the top surface of the first conductive structure away from the substrate layer on the substrate layer.

10. The stretchable device of claim 8 or 9, wherein, The material of the pixel defining layer is an inorganic material.

11. The stretchable device of any one of claims 6, 8-10, wherein, Further comprising a first power line and a second power line arranged in the bridge region and extending to the island region and the sub-pixel for electrical connection; The stretchable device further comprises a barrier layer between the substrate layer and the flat layer, a first metal layer between the barrier layer and the flat layer, an interlayer insulating layer between the first metal layer and the flat layer, and at least one second metal layer between the interlayer insulating layer and the flat layer; The part of the first power line in the island region is arranged in the first metal layer, and the part of the first power line in the bridge region comprises a signal line arranged in at least one second metal layer, the auxiliary cathode is electrically connected with a first adapter in the second metal layer through a via hole penetrating through the flat layer, and the first adapter is electrically connected with the first power line in the first metal layer through a via hole penetrating through the interlayer insulating layer; The part of the second power line in the island region is arranged in the first metal layer, and the part of the second power line in the bridge region comprises a signal line arranged in at least one second metal layer, the anode is electrically connected with a second adapter in the second metal layer through a via hole penetrating through the flat layer, and the second adapter is electrically connected with the second power line in the first metal layer through a via hole penetrating through the interlayer insulating layer.

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

13. The stretchable device of claim 12, wherein, The sum of the widths of each first power line and each second power line 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 of any one of claims 1-13, wherein, The aperture ratio of the stretchable device is greater than 50%.

15. A cosmetic device, wherein, The cosmetic device comprises a body and a stretchable device attached to the body, wherein the stretchable device is according to any one of claims 1-14.

16. The cosmetic device of claim 15, wherein, The stretchable device is attached to the body.

17. The cosmetic device of claim 16, wherein, Further comprising a protective film attached to the side of the stretchable device away from the body, and the protective film is provided with a through hole corresponding to the hole region of the stretchable device.

18. The cosmetic device of claim 17, wherein, The body is an elastic carrier film with the function of absorbing cosmetic liquid.

19. The cosmetic device of any of claims 16-18, wherein, The body is provided with a mouth opening, a nose opening and an eye opening.

20. The cosmetic device of claim 15, wherein, The cosmetic device is a mask, the body is a curved structure, the stretchable device is attached in the curved structure, and the substrate layer of the stretchable device is close to the body.

21. The cosmetic device of claim 20, wherein, An elastic carrier film is arranged between the body and the base layer of the stretchable device, and the elastic carrier film is provided with through holes corresponding to the hole regions of the stretchable device.

22. The cosmetic device of claim 20 or 21, wherein, The body is provided with an eye opening.

23. The cosmetic device of any of claims 16-22, wherein, Two stretchable devices are attached to the body, and the two stretchable devices are symmetrically arranged along a line connecting the nose and the center of the eyebrow.

24. The cosmetic device of claim 23, wherein, The number of hole regions of the stretchable device near the line connecting the nose and the center of the eyebrow is less than the number of hole regions far from the line connecting the nose and the center of the eyebrow.

25. A method of manufacturing a stretchable device for manufacturing a stretchable device according to any one of claims 1-14, wherein, The manufacturing method comprises: forming a plurality of island regions, a plurality of hole regions and a plurality of bridge regions on a base layer, at least one of the island regions comprising a sub-pixel; forming an anode, a light-emitting layer and a cathode in the island region in a direction away from the base layer; wherein the island region comprises an effective light-emitting region and a lap region located at the periphery of the effective light-emitting region, the anode and the light-emitting layer covering the effective light-emitting region, the cathode covering the effective light-emitting region and at least part of the lap region, the lap region comprising an auxiliary cathode arranged in the same layer as the anode, and the cathode being electrically connected to the auxiliary cathode.

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