LED light-emitting chip and stretchable phototherapy instrument
By using a packaging film to protect the LED light-emitting chip and connecting it into an array structure through elastic conductive materials, the problems of wearable phototherapy equipment when used in multiple curved parts are solved, and better fit and phototherapy effects are achieved.
Patent Information
- Application Number
- CN202421104333.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing wearable phototherapy equipment lacks flexibility and stretchability in design, resulting in discomfort when used in multi-curved parts, affecting the uniformity and stability of the phototherapy effect.
The LED light-emitting chip protected by the packaging film is connected into an array structure through elastic conductive materials to achieve the tensibility of the LED light-emitting chip and adapt to the bonding of different shapes and curved surfaces.
It improves the fit and comfort of the phototherapy device, ensuring the uniformity and stability of the phototherapy effect, especially in multi-curved parts.
Smart Images
Figure CN222602947U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of medical devices, and in particular to an LED light-emitting chip and a stretchable phototherapy device. Background Art
[0002] In the field of modern science and technology and medicine, LED (light-emitting diode) technology is widely popular due to its high efficiency, long life, low power consumption and easy integration. LED can efficiently convert electrical energy into light energy and is widely used in lighting, display technology and medical equipment. Especially in the field of phototherapy, LED technology has been widely used in medical procedures such as promoting wound healing, treating skin diseases and relieving pain because it can provide light of specific wavelengths, showing its unique therapeutic potential and advantages.
[0003] With the development of wearable technology, phototherapy devices have also begun to be integrated into daily wear to provide more convenient and continuous treatment effects. These wearable phototherapy devices can fit closely to the patient's skin and provide targeted phototherapy to specific parts, thereby improving the accuracy and efficiency of treatment. Especially in the management of diseases such as arthritis and muscle pain, wearable phototherapy devices have demonstrated their unique value, enabling patients to receive treatment seamlessly in their daily lives, greatly improving their quality of life.
[0004] However, the current wearable phototherapy devices on the market are often lacking in flexibility and stretchability, which limits their comfort and applicability to a certain extent, especially when used on multi-curved parts such as elbows and knees. Since these parts bend and stretch during activities, devices that lack stretchability may not only cause discomfort when worn, but may also affect the uniformity and stability of the phototherapy effect. Utility Model Content
[0005] In order to solve the above problems and make the wearable light therapy device have better fit and treatment effect, in the first aspect, the present application provides an LED light-emitting chip.
[0006] The present application provides an LED light-emitting chip that adopts the following technical solution:
[0007] An LED light-emitting chip comprises an epitaxial layer and a first electrode layer and a second electrode layer arranged on opposite sides of the epitaxial layer, wherein a packaging film is arranged on the surface of the first electrode layer, and a line hole is opened in the packaging film to expose the first electrode layer.
[0008] By adopting the above technical solution, there is a packaging film on the surface of the first electrode layer, and the wire holes on the packaging film expose the first electrode layer. This design allows the LED chip to add a protective layer while maintaining functionality, and the solder joints of the electrical connection are hidden under the packaging layer, which can better fit the human body. The wire holes are opened on the packaging film to expose the first electrode layer, providing a bridge for the electrical connection between adjacent LED light-emitting chips, thereby facilitating the adjacent LED light-emitting chips to achieve a stretchable effect after being connected through an elastic conductive substrate.
[0009] Optionally, the packaging film is a PEN film or a PET film.
[0010] By adopting the above technical solution, the PEN film or PET film provides good mechanical stability and flexibility, which enables the LED chip to better fit on various curved surfaces, thereby improving the comfort and applicability of wearable devices.
[0011] Optionally, the epitaxial layer includes an N-type contact layer, an N-type doped layer, a quantum well layer, a P-type doped layer, and a P-type contact layer stacked in sequence.
[0012] By adopting the above technical solutions, the epitaxial layer can effectively control the flow of electrons and holes, and optimize the generation of photons through the design of the quantum well layer, thereby improving the light efficiency and performance of the LED.
[0013] Optionally, the second electrode layer is partially hollowed out.
[0014] By adopting the above technical solution, the shielding of light by the second electrode layer is reduced, and the light excited by the epitaxial layer is emitted as much as possible while meeting the conductivity requirements. Partial hollowing of the second electrode layer can reduce the weight of the overall structure and increase its flexibility, which is conducive to improving the adaptability of the LED light-emitting chip in different wearing environments, thereby improving its fit in the phototherapy device.
[0015] In a second aspect, the present application provides a stretchable phototherapy device.
[0016] The present application provides a stretchable phototherapy device that adopts the following technical solution:
[0017] A stretchable light therapy device comprises the above-mentioned LED light-emitting chip, wherein each of the LED light-emitting chips is electrically connected to form an array structure via an elastic conductive material.
[0018] By adopting the above technical solution, multiple LED light-emitting chips are electrically connected into an array structure through elastic conductive materials. This design improves the flexibility and stretchability of the overall system, which is conducive to the phototherapy device to fit closely to different shapes and surfaces, thereby improving the comfort and effect during use.
[0019] Optionally, the wire hole extends to the edge of the packaging film, and the height of the elastic conductive material is flush with the packaging film.
[0020] By adopting the above technical solution, the wire hole extends to the edge of the packaging film and is flush with the elastic conductive material, so that the elastic conductive material will not cross over the packaging film during the connection of the LED light-emitting chip, thereby reducing the protrusions on the surface of the phototherapy device, reducing scratches on the skin or clothing, and further improving the fit and comfort when worn.
[0021] Optionally, the elastic conductive material is conductive silver paste.
[0022] By adopting the above technical solution and selecting conductive silver paste as the elastic conductive material, the reliability of the electrical connection is guaranteed and good elasticity and stretchability are provided, which helps the LED light-emitting chip maintain excellent performance and fit in various wearing conditions.
[0023] Optionally, the first electrode layer of all the LED light-emitting chips is located on the same side of the stretchable light therapy device, and the first electrode layer of the LED light-emitting chip is electrically connected to the second electrode layer of the adjacent LED light-emitting chip.
[0024] By adopting the above technical solution, all LED light-emitting chips are connected in series to ensure the consistency and stability of the electrical connection. At the same time, this layout contributes to the flexibility and scalability of the entire light therapy device, further improving the fit.
[0025] Optionally, the first electrode layer of all the LED light-emitting chips and the second electrode layer of the adjacent LED light-emitting chips are located on opposite sides of the stretchable light therapy device, and the first electrode layer of the LED light-emitting chip is electrically connected to the second electrode layer of the adjacent LED light-emitting chip.
[0026] By adopting the above technical solution, the span of the elastic conductive material is reduced, which not only reduces the resistance but also avoids the oblique elastic conductive material from hindering the opening and closing of adjacent LED light-emitting chips.
[0027] Optionally, the first electrode layers of all the LED light-emitting chips are located on the same side of the stretchable light therapy device, all the first electrode layers are electrically connected as one pole of the stretchable light therapy device, and all the second electrode layers are electrically connected as the other pole of the stretchable light therapy device.
[0028] By adopting the above technical solution, all LED light-emitting chips are set in parallel, which provides more design flexibility for the stretchable light therapy device and can be optimized according to different application requirements and wearing environments.
[0029] In summary, the present application includes at least one of the following beneficial technical effects:
[0030] 1. High flexibility and stretchability: Each of the LED light-emitting chips is electrically connected to an array structure through flexible materials. The phototherapy device can maintain a good fit under different wearing conditions, especially when it is fitted to multiple curved surfaces, which can effectively improve the comfort and therapeutic effect during use.
[0031] 2. Optimized electrical connection design: LED light-emitting chips have a variety of arrangements and can be configured according to actual application requirements. While ensuring the consistency and stability of the electrical connection, the reliability and service life of the equipment are further enhanced.
[0032] 3. Structural innovation: The second electrode layer is partially hollowed out. This design not only reduces the weight of the LED light-emitting chip and increases its overall flexibility, but also helps to improve the adaptability and comfort of the device when worn, especially in complex or dynamic wearing environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 This is a schematic diagram of the structure of an LED light-emitting chip in Example 1 of the present application;
[0034] Figure 2 This is an overall schematic diagram of a stretchable phototherapy device according to Example 2 of the present application;
[0035] Figure 3 yes Figure 2 Partial details of area A in the middle;
[0036] Figure 4 This is an overall schematic diagram of a stretchable phototherapy device according to Example 2 of the present application;
[0037] Figure 5 This is an overall schematic diagram of a stretchable phototherapy device according to Example 2 of the present application;
[0038] Figure 6 This is a schematic diagram of electrical connections of a stretchable phototherapy device according to Example 2 of the present application;
[0039] Figure 7 This is a schematic diagram of electrical connections of a stretchable phototherapy device according to Example 3 of the present application;
[0040] Figure 8 This is a schematic diagram of electrical connections of a stretchable phototherapy device according to Example 4 of the present application.
[0041] Explanation of the accompanying drawings: 1. LED light-emitting chip; 11. epitaxial layer; 111. N-type contact layer; 112. N-type doped layer; 113. quantum well layer; 114. P-type doped layer; 115. P-type contact layer; 12. first electrode layer; 13. second electrode layer; 14. packaging film; 15. wire hole; 2. flexible conductive material. DETAILED DESCRIPTION
[0042] The following is combined with Figure 1-8 This application is described in further detail.
[0043] The application principle of LED chips in the field of phototherapy is based on their ability to emit light of specific wavelengths, which can penetrate the skin to reach the treatment site, promote cell regeneration, reduce inflammation, accelerate wound healing, and have other biological stimulation effects. These characteristics of LED make it a non-invasive, low-risk and effective treatment method, especially suitable for skin disease treatment, wound healing and pain management.
[0044] The advantages of wearable phototherapy devices are their portability and sustainability. Users can wear the device at home or during daily activities to achieve continuous treatment, which not only improves the convenience of treatment, but also enhances the sustained effect and overall efficiency of treatment. Compared with traditional phototherapy equipment, wearable phototherapy devices are more personalized and can provide users with customized treatment plans.
[0045] However, wearable light therapy devices currently on the market have design flaws, especially in terms of fit. Many devices do not fit perfectly to the body's curved surfaces, such as joints, which can lead to uneven distribution of light, reduced therapeutic effects, and reduced wearing comfort. Therefore, developing a more fitted, comfortable, and effective wearable light therapy device is a key requirement for current technological development.
[0046] The embodiment of the present application discloses an LED light-emitting chip.
[0047] Example 1
[0048] Reference Figure 1 The LED light emitting chip includes an epitaxial layer 11 and a first electrode layer 12 and a second electrode layer 13 which are bonded to opposite sides of the epitaxial layer 11 .
[0049] The epitaxial layer 11 includes an N-type contact layer 111 , an N-type doped layer 112 , and a quantum well layer 113 , as well as a P-type doped layer 114 and a P-type contact layer 115 which are stacked in sequence.
[0050] A packaging film 14 is disposed on the surface of the first electrode layer 12 . A line hole 15 is formed in the packaging film 14 to expose the first electrode layer 12 . Preferably, the line hole 15 extends to the edge of the packaging film 14 .
[0051] Exemplarily, the packaging film 14 is a PEN film or a PET film.
[0052] The second electrode layer 13 is partially hollowed out, so that the second electrode layer 13 becomes a plurality of electrodes electrically isolated from each other, and the shielding of the light excited by the epitaxial layer 11 by the second electrode layer 13 is reduced as much as possible.
[0053] The implementation principle of Example 1 is:
[0054] The N-type contact layer 111 and the P-type contact layer 115 provide injection channels for electrons and holes, which combine in the quantum well layer 113 to generate photons and radiate outward. This structure optimizes the recombination process of charge carriers, increases the recombination speed of charge carriers, and improves the light output efficiency of the LED light-emitting chip.
[0055] The packaging film 14 protects the first electrode layer 12 from physical damage and chemical corrosion, while the arrangement of the wire holes 15 ensures the electrical accessibility of the first electrode layer 12, which is conducive to maintaining the long-term stability and reliability of the LED light-emitting chip.
[0056] The hollow design of the second electrode layer 13 not only reduces the weight of the LED chip, but also increases its fit on the flexible substrate. Especially in wearable phototherapy devices, this design can improve the adaptability of the device to the skin, thereby improving the uniformity and effectiveness of the phototherapy effect.
[0057] The embodiment of the present application also discloses a stretchable phototherapy device.
[0058] Example 2
[0059] Reference Figure 2 , Figure 3 , and refer to Figure 4 , Figure 5 The stretchable phototherapy device includes a plurality of LED light-emitting chips 1 disclosed in Embodiment 1, and each LED light-emitting chip 1 is electrically connected to form an array structure through an elastic conductive material. Exemplarily, in this embodiment, a packaging film 14 is provided on the surface of the first electrode layer 12 and the second electrode layer 13, and a wire hole 15 is provided on the packaging film 14, and the wire hole 15 extends to the edge of the packaging film 14 to facilitate the connection between adjacent LED light-emitting chips 1.
[0060] Specifically, refer to Figure 6 The first electrode layers 12 of all LED light-emitting chips 1 are located on the same side of the stretchable light therapy device, and the second electrode layers 13 of all LED light-emitting chips 1 are located on the other side of the stretchable light therapy device. All first electrode layers 12 are electrically connected to form one pole of the stretchable light therapy device, and all second electrode layers 13 are electrically connected to serve as the other pole of the stretchable light therapy device.
[0061] The elastic conductive material is exemplarily conductive silver paste, the diameter of the elastic conductive material is less than or equal to the thickness of the packaging film 14 , and the elastic conductive material is flush with the upper surface of the packaging film 14 on the side of the stretchable phototherapy device close to the first electrode layer 12 .
[0062] The overall structure of the stretchable light therapy device can be a tubular structure surrounded by the LED light-emitting chip 1, or a matching structure such as a buckle or a zipper can be set at the opposite ends of the stretchable light therapy device to enclose the patient's joints and then fix them.
[0063] The implementation principle of Example 2 is:
[0064] Each LED light-emitting chip 1 is connected to each other by a flexible material. This configuration enables the entire phototherapy device to conform to various bends and curves of the human body, especially to fit closely to the skin at the joints. This close fit not only makes the light more evenly distributed in the target treatment area, but also ensures that each LED light-emitting chip 1 is at the same distance from the tissue to be treated, and the light it emits can be transmitted to the skin and subcutaneous tissue at a constant power, thereby enhancing the therapeutic effect of the light it emits.
[0065] Due to the application of flexible materials, these LED light-emitting chips 1 can remain stable even when the user moves or is active, so that each LED light-emitting chip 1 maintains a relatively stable positional relationship with the skin it is attached to, ensuring continuous and consistent light therapy. This structural design not only optimizes the transmission and distribution of light, but also further improves the safety and effectiveness of treatment by reducing heat concentration and improving the stability of electrical connections. Therefore, the combination of this LED light-emitting chip 1 and flexible materials not only provides effective light therapy treatment, but also greatly enhances the user experience and comfort.
[0066] Example 3
[0067] Reference Figure 7 The difference between this embodiment and Embodiment 2 is that the first electrode layer 12 of all the LED light-emitting chips 1 in this embodiment and the second electrode layer 13 of the adjacent LED light-emitting chips 1 are located on the opposite sides of the stretchable phototherapy device, and the first electrode layer 12 of the LED light-emitting chip 1 is electrically connected to the second electrode layer 13 of the adjacent LED light-emitting chip 1.
[0068] The implementation principle of Example 3 is:
[0069] The wiring of each flexible material is parallel to the tangent of the skin at the contact part, which shortens the span of the elastic conductive material. On the one hand, due to the shortened wiring length, the total resistance of the elastic conductive material is reduced, making the circuit more efficient; on the other hand, when the elastic conductive material shrinks to the limit, two adjacent LED light-emitting chips 1 can directly abut against each other, avoiding the obstruction of the opening and closing of the adjacent LED light-emitting chips 1 by the oblique elastic conductive material.
[0070] Example 4
[0071] Reference Figure 8 The difference between this embodiment and embodiment 2 is that the first electrode layers 12 of all LED light-emitting chips 1 in this embodiment are located on the same side of the stretchable light therapy device, the second electrode layers 13 of all LED light-emitting chips 1 are located on the other side of the stretchable light therapy device, and the first electrode layers 12 of the LED light-emitting chips 1 are electrically connected to the second electrode layers 13 of the adjacent LED light-emitting chips 1. The LED light-emitting chips 1 are preferably grouped in series and then connected in parallel.
[0072] The implementation principle of Example 4 is:
[0073] The length of each flexible guide 2 is longer, and under the same telescopic ratio limit, the stretchable phototherapy device of this embodiment has a larger size adjustment range.
[0074] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An LED light-emitting chip, characterized in that: The invention comprises an epitaxial layer (11), and a first electrode layer (12) and a second electrode layer (13) arranged on opposite sides of the epitaxial layer (11), wherein the second electrode layer (13) is partially hollowed out, and a packaging film (14) is arranged on the surface of the first electrode layer (12), and a wire hole (15) is opened on the packaging film (14) to expose the first electrode layer (12).
2. The LED light emitting chip according to claim 1, characterized in that: The packaging film (14) is a PEN film or a PET film.
3. The LED light emitting chip according to claim 1, characterized in that: The epitaxial layer (11) comprises an N-type contact layer (111), an N-type doping layer (112), a quantum well layer (113), a P-type doping layer (114), and a P-type contact layer (115) which are stacked in sequence.
4. A stretchable phototherapy device, characterized in that: The LED light-emitting chip (1) comprises any one of claims 1 to 3, wherein each of the LED light-emitting chips (1) is electrically connected to form an array structure via an elastic conductive material.
5. The stretchable phototherapy device according to claim 4, characterized in that: The wire hole (15) extends to the edge of the packaging film (14), and the height of the elastic conductive material is flush with the packaging film (14).
6. The stretchable phototherapy device according to claim 4, characterized in that: The elastic conductive material is conductive silver paste.
7. The stretchable phototherapy device according to any one of claims 4 to 6, characterized in that: The first electrode layers (12) of all the LED light-emitting chips (1) are located on the same side of the stretchable light therapy device, and the first electrode layer (12) of the LED light-emitting chip (1) is electrically connected to the second electrode layer (13) of the adjacent LED light-emitting chip (1).
8. The stretchable phototherapy device according to any one of claims 4 to 6, characterized in that: The first electrode layer (12) of all the LED light-emitting chips (1) and the second electrode layer (13) of the adjacent LED light-emitting chips (1) are located on opposite sides of the stretchable light therapy device, and the first electrode layer (12) of the LED light-emitting chip (1) is electrically connected to the second electrode layer (13) of the adjacent LED light-emitting chip (1).
9. The stretchable phototherapy device according to any one of claims 4 to 6, characterized in that: The first electrode layers (12) of all the LED light-emitting chips (1) are located on the same side of the stretchable light therapy device, all the first electrode layers (12) are electrically connected as one pole of the stretchable light therapy device, and all the second electrode layers (13) are electrically connected as the other pole of the stretchable light therapy device.