311results about How to "Less restraint" patented technology

The invention discloses a wearable human body multiple physiological parameter acquiring device. The wearable human body multiple physiological parameter acquiring device comprises a wearable acquiring band and acquiring clothes, wherein the wearable acquiring band comprises a chest strap, shoulder straps, a waistband and a connecting band located on the chest. The chest strap, the waistband and the connecting band comprise an outer layer and a liner respectively, the chest strap is fixedly connected with the waistband through the connecting band, and the chest strap is fixedly connected with the shoulder straps. Sandwich layers between the outer layers and the liners of the chest strap, the waistband and the connecting band are provided with corresponding electrode buttons, the outer surfaces of the liners of the chest strap, the waistband and the connecting band are correspondingly provided with electrodes for acquiring electrocardiosignals or respiratory signals, and the outer surface of the liner of the chest strap is further provided with a first temperature sensor and a second temperature sensor which are used for acquiring human body temperature signals. The acquiring clothes comprises a pocket provided with an acquiring circuit, sleeve bands for measuring blood pressure and provided with air bags are fixed at the upper-limb positions of sleeves of the acquiring clothes, and the air bags are connected with a pressure sensor in a blood pressure signal interface circuit in the acquiring circuit through air guiding tubes.

Two-way, three-position and one-way, two-position slit valves in cardiovascular access catheters with closed distal ends have slit geometries configured to overcome adhesion between opposed abutting slit faces, when pressure differentials are applied between the interior and the exterior of the catheter. Portions of the slit are oriented at a non-zero angle relative to the longitudinal axis of the catheter causing shear forces to be generated in abutting slit faces. Shear forces arise from tangential, radial, or longitudinal stresses generated in the catheter body. Slit geometries are planar or curved or include multiple end-to-end connected slit subsections. If a slit partially circumscribes a portion of the adjacent outer wall of the catheter body, restraint to outward and inward movement on that portion is reduced. Slit valves are configured to open inwardly to aspirate fluids, to open outwardly to infuse fluids, or both.

The present invention provides a motion capturing system and method based on a CAN bus and an inertial sensor, for tracking and capturing motion information of a human body in a real-time manner. The system comprises an inertial sensing node combination, a data aggregation node, and a central computer. The inertial sensing node combination contains 18 inertial sensing nodes, collects an accelerated speed, an angular speed, and geomagnetic information data of each bone point part in a real-time manner, and performs attitude estimation by using a complementary integration filtering algorithm, so as to obtain data, such as a quaternion and an euler angle, of an three-dimensional attitude of the current bone point. The data aggregation node is connected to the 18 inertial sensing nodes, is configured to collect, in a time-sharing manner, three-dimensional attitude data of each bone point obtained by the 18 inertial sensing nodes, and send the collected data to the central computer by using a wireless wifi module. A main task of the central computer is to complete functions of collecting motion data transmitted from the data aggregation node and driving a virtual 3D person model by using the motion data.

A compact and easy-to-use walking assisting device capable of reducing constrained feeling given to a user and allowing a free swing of the arms of the user in walking. The walking assisting device comprises one or more leg links to which ground contact members are connected at their lower ends respectively and a load transfer portion connected to the upper ends of the leg links, in which at least a part of the weight of the user is supported by the leg links via the load transfer portion, wherein the load transfer portion includes a seat member for the user to sit astride, wherein connecting portions with the upper ends of the leg links connected thereto are attached to the undersurface of the seat member, and wherein the connecting portion have a degree of freedom allowing the forward / backward and lateral swings of the leg links.

The invention discloses laminated ferroelectric / magnetic multiferroic and magnetoelectric composite film and preparation method thereof. The film comprises a substrate, a ferroelectric oxide layer and a magnetic oxide layer, and also a buffer layer positioned between the substrate layer and the ferroelectric oxide layer or the magnetic oxide layer. The layer can be LaNiO3, YBa2Cu3O7-x or SrRuO3, among which LaNiO3 is preferred. The preparation method comprises the following steps: firstly, buffer layer sol is prepared; secondly, the buffer layer sol is uniformly coated on the substrate to obtain the buffer layer; thirdly, sol of the ferroelectric oxide layer and the magnetic oxide layer is respectively prepared; fourthly, the sol obtained in step 3 is coated on the buffer layer, and then the end product is obtained. After the composite film is introduced into the buffer layer, the stress restraint of the substrate to the composite film is effectively reduced, the magnetoelectric coupling performance of the composite film with laminated structure is obviously enhanced, the cost is reduced, the preparation technique is simple, the requirement on the equipment is low, and the compatibility with the prior technique is good.

A process for preparing the expendable composite nitrile rubber-polyurethane glove includes generating a layer of nitrile rubber film on a mould, and dipping it in aquatic polyurethane emulsion. The resultant glove has high resistance to oil and bacterial osmosis, high weatherability, and high air and moisture permeability.

The invention discloses a super-light leisure sports fabric and a production method thereof. Yarns and weft yarns totally consist of chemical fiber yarns of 10 to 20 D, a finished product has light, thin and flexible properties, the gram weight of the finished product is 20 to 80 g / m<2>, and the felting resistance of the finished product can reach more than level 4. The product lightens the binding feeling of clothes on the body so as to be light and convenient for people to wear and easy for sports. The product has the characteristics of soft handfeel, lightweight, thinness, durability, good draping property, good size stability, easy wash, ironing and pressing prevention, water resistance, dirt resistance, and the like. The fabric is more comfortable and convenient during wearing for sports.

The invention discloses terylene sports fabric with elastic warp yarns and weft yarns. The fabric is characterized in that: at least one of the warp yarn and weft yarn is high-elasticity yarn prepared by the combination of polyethylene terephthalate(PET) and polypropylene terephthalate(PTT), the denier of the warp yarn and weft yarn is between 50 and 300D, and the denier per filament is between 0.5 and 3.2D. The fabric has the characteristics of loose texture, soft touch, good elasticity and drapability, good size stability, easy washing, no need of ironing, water resistance, stain resistant and the like.

The invention discloses a preparation method of a metal-nonmetal-codoped nano-titanium dioxide photocatalyst. The method comprises the following steps of: a, adding modified polyacrylonitrile fibers to TiCl4 solution, standing for 0.1-2h, heating up to 30-80 DEG C, carrying out heat preservation for 1-10h, filtering, washing with distilled water until the solution is neutral, drying to constant weight, thereby obtaining nitrogen-doped modified nano-titanium dioxide; and b, feeding the prepared nitrogen-doped modified nano-titanium dioxide to a metal ion solution, impregnating for 0.1-2h, filtering, and drying to constant weight so as to obtain the product. Compared with the prior art, materials prepared by the method are rapid in dye wastewater degradation speed, free of secondary pollution, simple in preparation process, low in operation cost, firm in combination with fibers, unlikely to drop, easy to recover, and simple to recycle.

The invention discloses a calling method, a desensitization server, seat equipment and a computer readable storage medium. When the method is executed in a desensitization server, the method comprisesthe following steps: carrying out desensitization processing on a to-be-called telephone number to generate a to-be-called virtual number; Sending the virtual number to be called to seat equipment; Receiving a calling virtual number sent by the agent device, wherein the calling virtual number is determined by the agent device according to the selection of the agent to the to-be-called virtual number; Inquiring a calling telephone number corresponding to the calling virtual number; By means of the method, on the premise that the client resource safety is guaranteed, the constraint of the worksite on the work personnel of the party B can be reduced, and therefore the work personnel of the party B can work better.

The invention discloses a casting defect eliminating method which belongs to the field of casting treatment. The casting defect eliminating method provided by the invention comprises five steps: defect cleanup, bevel preparation, weld preheating, welding repair and postweld treatment, wherein the defect cleanup refers to eliminating common surface defects by grinding, and common crack defects andgreats defects are subjected to a next step; the bevel preparation refers to forming a U-shaped bevel in the defected position and the bevel surface is a smooth curved surface; the weld preheating refers to carrying out local preheating to the common defects and integral preheating to the great defects; the welding repair refers to carrying out 1-2 layers of resurfacing welding along the side surface of a bevel, further fully welding the concave part in the resurfacing welding position and repeating the step until the whole bevel is welded to be full completely; and the postweld treatment refers to carrying out dehydrogenation treatment to the common defects after being welded and annealing treatment to the great defects after being welded. By improving the welding method and optimizing the process parameters when repairing different defects, the invention greatly reduces the probability of adverse influencing factors occurring in defect repair process, saves the time spent in defect repair and achieves the effect of cost saving while ensuring the qualified rate of casting repair.

The invention provides a steel plate and high-strength concrete combined shear wall which comprises outer covered double-layer steel plates and high-strength concrete poured between the outer covered double-layer steel plates, wherein multiple rows of bolts are arranged on surfaces on the opposite sides of the outer covered double-layer steel plates. According to the invention, the concrete is filled between the double-layer steel plates, the steel plates and the concrete are tightly coupled by using the bolts and the concrete and the steel plates are mutually restrained, so that the deformability of the inner-filled concrete is increased, the ductility and the energy-dissipating capacity of the shear wall under the load effect are greatly increased, the structure of a double-steel-plate combined shear wall is simple, the outer steel plate can be used as a template and the construction is simple and convenient.

The invention discloses a cloth sole structure. The cloth sole structure is used for solving the problems of inconvenient processing and bad wearing comfort of the existing cloth sole structure. The adopted technical solution is as follows: the cloth sole structure comprises a sole and a foot pad; shapes of outer edges of the sole and the foot pad are similar to each other; an annular slot is arranged inside the outer edge of the sole, and the outer edge of the foot pad extends into the slot; the right side of the sole is provided with an opened holding cavity which is arranged inside the slot; the shapes of the outer edges of the holding cavity and the sole are similar to each other; the foot pad is arranged in the holding cavity; and the side face of the foot pad is bonded with the inner face of the holding cavity.

The invention discloses a balance antipodal Vivaldi antenna adopting unsymmetrical medium rejection and mixed grooving and relates to the field of antennas. While low cross polarization of a traditional balance antipodal Vivaldi antenna is kept as an advantage, the problem that due to asymmetry of the traditional balance antipodal Vivaldi antenna, a main lobe of the E face of the antenna deviates is solved. Each floor metal layer is attached to the lower surface of a medium substrate layer, a conductor metal layer is attached to the upper surface of the lower medium substrate layer, the conductor metal layer and the floor metal layers extend to the two sides respectively to form metal arms, the metal arms formed by the floor metal layers and the metal arm formed by the conductor metal layer are symmetrical in structure, the outer sides and the inner sides of the metal arms are of curve structures, the lower medium substrate layer located between the curve on the inner side of the conductor metal layer and the curve on the inner side of the lower floor metal layer is rejected, and the rejected lower medium substrate layer is provided with one more medium section compared with the curves on the inner sides of the floor metal layers. The balance antipodal Vivaldi antenna is used for working within the working frequency of 10-40 GHz.

The invention relates to a comfort spandex fiber and a preparation method thereof. A formula of the comfort spandex fiber comprises the following raw materials in percentage by mass: 60.0% to 70.8% of polyurethane fiber-forming polymer including a polyether glycol structural unit, 28.0% to 38.0% of polyurethane fiber-forming polymer including a dihydroxyl silicone oil structural unit, and 1.2% to 2.0% of additive. The preparation method comprises the following steps of 1, preparing a prepolymer including the polyether glycol structural unit and a prepolymer including the dihydroxyl silicone oil structural unit respectively, carrying out chain extension, so as to prepare a fiber-forming high polymer, and mixing the fiber-forming high polymer with additive slurry; 2, afterwards, storing and curing an obtained mixture under ultrasound and agitation, so as to prepare a spinning stock solution; 3, finally, preparing the comfort spandex fiber through a dry spinning device and technique. The comfort spandex fiber provided by the invention has the characteristics of high resilience and low modulus, and meets the requirements of the field of the application of comfort spandexes; the constraint feeling to skin is lightened; a consumer is enabled to feel comfortable and free doubly; an oil agent is not needed to be used for a silk coil in a coiling process; a product is more clean; the subsequent use is more convenient.

The invention belongs to the field of manufacturing of lithium-ion electrolytes and particularly relates to a fluorine-doped lithium-ion solid electrolyte and a preparation method thereof. A stoichiometric equation of the lithium-ion solid electrolyte is Li<10+x-y>M<1+x>P<2-x>S<12-y>F<y>, wherein x=0.1-1.0; y=0.1-0.3; and M is Ge, Si or Sn. According to the prepared Li<10+x-y>M<1+x>P<2-x>S<12-y>F<y> lithium-ion solid electrolyte, S<2-> is replaced with partial F<-> to form a P-F<4> covalent bond; the bond energy of a P-F covalent bond is greater than that of a P-S covalent bond; the constraints of fluorine ions on lithium ions are weakened through reinforcement of the P-F bond; and the migration rate of the lithium ions is improved. The lithium ion conductivity of the Li<10+x-y>M<1+x>P<2-x>S<12-y>F<y> lithium-ion solid electrolyte reaches 2.0*10<-2>S / cm and more.

A compact and easy-to-use walking assisting device capable of reducing constrained feeling given to a user and allowing a free swing of the arms of the user in walking. The walking assisting device comprises one or more leg links to which ground contact members are connected at their lower ends respectively and a load transfer portion connected to the upper ends of the leg links, in which at least a part of the weight of the user is supported by the leg links via the load transfer portion, wherein the load transfer portion includes a seat member for the user to sit astride, wherein connecting portions with the upper ends of the leg links connected thereto are attached to the undersurface of the seat member, and wherein the connecting portions have a degree of freedom allowing the forward / backward and lateral swings of the leg links.

The invention discloses a multi-sheet type fan tower and a manufacturing method and a transporting method thereof. The multi-sheet type fan tower comprises a plurality of longitudinal tower body sheets equal in radian and a plurality of connecting pieces which are fixedly arranged at the end edges of two sides of the longitudinal tower body sheets, wherein the adjacent longitudinal tower body sheets are fixedly connected through the connecting pieces. The radian of each of the n longitudinal tower body sheets is 360 degrees / n. The invention also discloses a manufacturing method and a transporting method of the multi-sheet type fan tower. According to the multi-sheet type fan tower, the welding workload is reduced, the non-destructive testing cost is lowered, and the welding quality risk isavoided; moreover, the butt weld quantity of the tower is reduced, and the damage of restraint intensity and stress concentration of the tower structure is alleviated, so that the service life of thetower is prolonged. In addition, the multi-sheet type structure brings hoisting and transporting convenience.

The invention provides a device and method for detecting the freezing gait of a patient suffering from a Parkinson's disease. The device comprises a first inertial node, a second inertial node, an inertial node synchronizer, a pressure insole, a mobile terminal and a wireless Bluetooth headset. The first inertial node and the second inertial node are used for acquiring accelerated speed data, angular speed data and magnetic force value of the left leg and the right leg of the patient; the inertial node synchronizer is used for enabling the two inertial nodes to be in a synchronous mode; the pressure insole is used for acquiring pressure data of feet of the patient; and the wireless Bluetooth headset is used for giving audio stimulation on the patient when the patient has freezing gait to assist in the patient to recover normal gait. The method comprises the steps of real-time freezing gait detection, audio feedback and information recording. The device is simple in structure, and is light and convenient, a person wears the device conveniently, the device has good sensitivity and specificity, the freezing gait of the patient can be automatically detected and evaluated so that the patient can be protected in time, and the device can help a specialist physician to formulate a rehabilitation plan.

The invention provides orthopedic hunchback fixed correction chair, including chair, armrest, spring, chair back, shoulder belt, shoulder belt installation plate, fixed joint, spine stretcher, correction plate, massage bump, flexible pad, base plate, spine Stretcher mounting plate, upper limit card, adjustment limit card, shoulder strap mounting seat and spine stretcher mounting seat, armrests are provided on both sides of the top of the chair; the spring is fixedly installed on the top back side of the chair; The back of the chair is fixedly installed on the top of the spring; the back of the chair is provided with a shoulder belt installation seat and a spine stretcher installation seat. The present invention is equipped with a spine soothing and stretching tool combined with a chair, which can be easily used during work, can stretch the muscles and bones, is beneficial to the blood circulation of the body, can reduce the pressure on the ganglion, and relieve the pain caused by excessive force and long time. Back pain and indigestion caused by posture can stretch the muscles near the spine and reduce fatigue during work.

The invention provides a method for realizing the virtual reality all-directional action based on an action capturing system. According to the method, a sensor node set by the action capturing system is used for obtaining original information of the actions of the human body, a fusion algorithm is utilized for obtaining respective human body joint dynamic parameters, and then a multi-source information fusion technology is utilized for fusing and correcting the received human body joint dynamic parameters and calculating control parameters of an action protecting device; the action protecting device is driven to drive the action capturing system so as to help to safely control the human body to do the actions of rotating, standing upright, bending forward, horizontal moving, diving and the like. When the method is used, the safety of the actions of the human body is ensured, constraint on the actions of the human body is smaller, the 360-degree ground actions can be achieved, and the aerial actions of soaring, diving, bending forward and the like can be achieved; as selectable VR glasses (oculus rift) or Kinect accessories of the Microsoft are combined, a game player can safely control the ground actions and the aerial actions of the virtual world in a 360-degree all-directional mode in reality, real simulation of reality reaction can be achieved in the virtual world, and the effect is more verisimilitude.

The invention discloses a waist assisting exoskeleton robot. A back connecting assembly (4) is worn on the back of a human body through a back binding structure (25); a waist binding structure (26) enables the waist connecting assembly (3) to be worn on the waist of the human body; after the human body wears the exoskeleton robot, the back connecting assembly (4) is always attached to the back ofthe human body, and the waist connecting assembly (3) is always attached to the waist of the human body; in the process of stooping and carrying objects, thigh assemblies (2) are kept attached to thethighs of the human body; the thigh assemblies (2) and the back connecting assembly (4) can detect posture changes of the legs and the back of the human body, and supporting force is provided in the stooping process of the human body to realize stooping assistance. In the walking object carrying process, a waist joint assembly (1) drives the thigh assemblies (2) to move relative to the waist connecting assembly (3), and normal walking of the human body is not disturbed; and meanwhile, the thigh assemblies (2) can provide supporting force for an object, and the force of arms of the human body is reduced under the supporting effect of the thigh assemblies (2).

The invention discloses a virtual reality system and a wireless realization method thereof. The system comprises a host, a virtual reality helmet which is connected with the host in a communication mode and is used for displaying virtual reality scene images in real time, multiple wireless handle controllers and multiple wireless camera devices which are installed around the space of the virtual reality helmet; the virtual reality helmet comprises a microcontroller, a first wireless chip and a second wireless chip; the first wireless chip is connected with the wireless camera devices to obtain position tracking information and send the information to the microcontroller; the second wireless chip is connected with the wireless handle controllers to obtain control command information and send the information to the microcontroller; the microcontroller sends the received information to the host and sends interaction instructions of the host to the wireless handle controllers through the second wireless chip; position tracking data and control command information are wirelessly transmitted to reduce constraint of cables on users; therefore, users can flexibly apply the virtual reality system and avoid treading wires so that user experience is increased.

A multifunctional auxiliary electrocardiogram monitoring device comprises a chest strap, a first electrocardiogram signal input module embedded in the chest strap, a hardware system capable of being taken out and placed in the chest strap as well as a middle connecting part accessing an electrocardiogram signal acquired from the first electrocardiogram signal input module to the hardware system, wherein a second electrocardiogram signal input module is embedded in a PCB (printed circuit board) of the hardware system, the first electrocardiogram signal input module is two silver-plated metal dry electrodes / Agcl wet electrodes, the second electrocardiogram signal input module is two platy silver-plated metal dry electrodes, one end of two biforked ends of the middle connecting part is buckled with one silver-plated metal dry electrode / Agcl wet electrode, and the other end is in plug connection with the hardware system; the hardware system comprises an input interface circuit receiving an electrocardiogram signal and recognizing the type of the electrode, an analog front end preprocessing module, an electrocardiogram dedicated chip, an MCU (microprogrammed control unit), an SD card module, a communication module, a power management module and an OLED (organic light emitting diode) display screen. The multifunctional auxiliary electrocardiogram monitoring device is small in size and comfortable and free to wear, and people can wear the chest strap to measure the electrocardiogram and can touch the dry electrodes in the PCB with double hands to measure the electrocardiogram.

The invention relates to anatase titanium dioxide microspheres and a preparation method thereof. The anatase titanium dioxide microspheres have a uniform grain diameter and the average grain diameteris 1 to 2mu m; the microspheres are formed through assembling nanoparticles with the average grain diameter of 10 to 25nm and the grain diameter of the nanoparticles is adjustable. The preparation method of the anatase titanium dioxide microspheres comprises the following steps: taking isopropyl titanate as a silicon source, ethanol as a solvent, diethylenetriamine as an end capping agent and fluorine-ion-containing liquid and ethanol as a morphology regulation agent, and carrying out solvothermal reaction to obtain TiO2 microspheres; drying, grinding and calcining the TiO2 microspheres to obtain the anatase titanium dioxide microspheres. According to the anatase titanium dioxide microspheres provided by the invention, the ethanol is used as the solvent, and the ethanol and the fluorine-ion-containing liquid are commonly used as the morphology regulation agent; anatase titanium dioxide nanoparticles with a high energy surface are obtained through the solvothermal reaction and the morphology can be controlled through adjusting the dosage of the ethanol.

The invention relates to a welding process for butt welding a high-strength cylinder body. The welding process sequentially comprises the following steps of grinding, inspecting, longitudinal seam welding, circumferential seam welding, perforating and inspecting. The welding process is characterized in that both the longitudinal seam welding and the circumferential seam welding adopt a welding mode of combining gas shielded welding and submerged arc automatic welding; the longitudinal seam welding comprises the steps in sequence: preheating for first welding, performing back welding, filling welding for first submerged arc welding, hydrogen removal and back chipping, preheating for second welding, filling welding for second submerged arc welding, post-welding heat treatment, nondestructiveinspection and groove machining; and the circumferential seam welding comprises the following steps in sequence: assembling of the cylinder body, inspecting, supporting by a tool, preheating for welding, back welding, polishing, filling welding through the submerged arc welding, post-welding heat treatment, and nondestructive inspection. The quality or efficiency of a single welding method is improved, the welding operation environment, the working condition and the work intensity are greatly improved, and the welding quality and efficiency are improved by 30% or above.

The invention discloses an air-coupled capacitive micromachined ultrasonic transducer with a T-shaped cavity structure and a preparation method thereof. Annular stress relief grooves are formed in theareas, fixed to the surfaces of supporting columns, of a vibration thin film. A cavity of the air-coupled capacitive micromachined ultrasonic transducer is T-shaped, that is, the electrode distance between upper and lower electrodes in the central region of the cavity is greater than the electrode distance between upper and lower electrodes of the region, close to the supporting columns, on the periphery of the cavity. According to the air-coupled capacitive micromachined ultrasonic transducer with the T-shaped cavity structure and the preparation method thereof, design of the T-shaped cavityis used for reducing the electrode distance between the upper and lower electrodes in the area on the periphery of the cavity, thus the average displacement of the thin film can be increased withoutaffecting the maximum amplitude of the thin film, then the output sound pressure is increased, and the electromechanical coupling coefficient and receiving sensitivity are improved; in addition, the method of forming stress relief grooves in the fixing end of the thin film can further reduce constraint of the fixing area on deformation of the thin film, deformation of the thin film is increased and the output sound pressure is improved.

The invention discloses a projection method-based high-frequency electromagnetic shielding judgement method, and mainly aims at solving the problem that shielding judgement in existing high-frequencyelectromagnetic calculation is inaccurate and low in efficiency. The method comprises the following steps of: 1, dividing a target surface into a plurality of triangles; 2, taking a plane which passesthrough a coordinate origin and takes an incident wave vector as a normal vector as a projection plane, and dividing the plane into a plurality of areas; 3, solving projection points of central points of triangle surface elements of the target surface; 4, solving projection heights of the central points of the triangle surface elements, and finding out a triangle surface element with the highestprojection height in each area, wherein the found triangle surface element is a non-shielded surface, and the other triangle surface elements in the same area are shielded surfaces; and 5, calculatinga radar cross section of each non-shielded surface, and overlapping the radar cross sections of all the non-shielded surfaces of the target surface so as to obtain a total radar cross section of thetarget surface. According to the method, the time required for shielding judgement is shortened and the shielding judgement precision is improved, so that the method can be used for terahertz electromagnetic scattering simulation.

The invention discloses a stretchable display module, a manufacturing method thereof and a display device. The stretchable display module comprisesa substrate having a plurality of islands arranged inan array and separated from each otherand a plurality of bridges for connecting the islands, first stretchable layers disposed on the plurality of bridges and a water blocking layer disposed on the substrate, a plurality of partition grooves are formed in the first stretchable layer on at least one bridge, the plurality of partition grooves separate the water blocking layer, so that the water blocking layer on the bridge is broken or thinned at the partition grooves, the water blocking layer less binds the bridge and the first stretchable layer on the bridge, the bridge is less prone to breakage when stretched, and the stretchable amount of the first stretchable layer on the bridge and the bridge is also increased.