40results about How to "Reduce side leakage" patented technology

The invention discloses a high molecular material layer with water absorbability, and the high molecular material layer comprises a high molecular foaming framework and a high water-absorbing resin, wherein the high molecular foaming framework is prepared by adopting a physical or chemical foaming method and is provided with a mutually-through open pore structure; the specific pore volume is 5-200 mL / g and the aperture ratio is 50-100%; the high water-absorbing resin is adhered or embedded on the pore wall of the open pore structure; each cubic meter of the high molecular material layer contains 2-200 kg of the high water-absorbing resin; and the water retaining capacity of the high molecular material layer is not less than 5 g / g. By utilizing the scheme, the high water-absorbing resin is attached to the pore wall of the high molecular foaming framework in an adhering and embedding manner, so that the high water-absorbing resin is swollen to lock body fluid when the high water-absorbing resin is contacted with the body fluid. When a user walks, the high water-absorbing resin does not relatively displace in a sanitary product, so that the deformation of the sanitary product is reduced to the greatest extent and gel which absorbs the fluid is not clustered.

The present invention relates to an encapsulated semiconductor device (20) provided on a flexible substrate (1), a method of providing an at least partially encapsulated semiconductor device (20) on a flexible substrate (1) and a software product for providing an at least partially encapsulated semiconductor device (20) on a flexible substrate (1). In a preferred embodiment, an encapsulation method is presented in which the organic layer (3) of an inorganic / organic / inorganic multilayer barrier (5) on a plastic foil (1) as a substrate is removed at the edges of an OLED (13). The edges are subsequently sealed with a standard TFE process to encapsulate the OLED (13). This enables cuttable OLEDs (20) that are cut out of a larger plastic substrate (1) and gives a method to reduce side leakage in OLEDs (20) that have been manufactured in a roll-to-toll process.

An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied tothe anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk in a display, the pixel definition layer may disrupt continuity of the OLED layers. The pixel definition layer may have a steep sidewall, a sidewall with an undercut, or a sidewall surface with a plurality of curves to disrupt continuity of the OLED layers. A control gate that is coupled to a bias voltage and covered by gate dielectric may be used to form an organic thin-film transistor that shuts the leakage current channel between adjacent anodes on the display.

The invention discloses a 3D (three-dimensional) breathing mask and a manufacturing method thereof. The 3D breathing mask comprises a pedestal, an interlayer and a face mask, wherein the pedestal is inosculated with a human face; the pedestal is uniformly provided with a plurality of small holes; the interlayer is arranged between the pedestal and the face mask; a filtering membrane is placed in the interlayer; the face mask is buckled on the pedestal; the face mask is also provided with a plurality of small holes; the pedestal, the interlayer and the face mask are communicated with external air. The face is scanned to obtain facial data by using a 3D scanner and a CT (Computed Tomography) scanner; a facial image is captured and converted into a 3D data file; a pedestal model digital file is generated; corresponding 3D pedestal and breathing mask digital files are designed; the printing is carried out through a 3D printer; the interlayer is placed in the pedestal; the face mask is buckled on the pedestal; a lacing is fastened. The 3D breathing mask provided by the invention is fayed with the face type of a person; the problem of the side leakage of air is solved; the propagation of a PM2.5 (Particulate Matter 2.5) and a pathogen can be effectively defended; a faying area to facial skin can be enlarged; the comfortableness is improved; the disassembly is convenient; a membrane is convenient to replace.

The invention discloses a sanitary towel. The sanitary towel comprises a fabric layer, a chip layer, a flow guiding layer, a breathable bottom film, release paper and a coating which are sequentially stacked from top to bottom. A structural adhesive is arranged between the adjacent layers, a main core body is arranged between the flow guiding layer and the breathable bottom film, a breathable gathering and distributing part with the closed boundary is arranged in the center of the main core body, the length of the breathable gathering and distributing part is at least 10% larger than that of the main core body, the width of the breathable gathering and distributing part is at least 20% larger than that of the main core body, and the depth of the breathable gathering and distributing part is at least 30% larger than the thickness of the main core body. Side leakage is reduced through the breathable gathering and distributing part, vent holes are formed in the main core body, through the combination of the breathable gathering and distributing part and the vent holes, besides enough absorption capacity is kept, the breathability of the product is greatly improved, meanwhile, secretion absorption can be accelerated to reduce side leakage risks, therefore, physical and psychological health of a customer is benefited, and the use comfort is improved.

A hydrophilized cellulose acetate tow band according to the present invention is characterized in that a hydrophilizing component having an HLB value of 16 or more is adhered onto the surface of a crimped cellulose acetate tow band, wherein the crimped cellulose acetate tow band is formed from a cellulose acetate having a substitution degree of 2.0 to 2.6 and has a total denier of 10000 to 40000 and the number of crimps of 30 to 60 crimps / inch, and wherein the amount of the hydrophilizing component to be adhered is 0.2 to 2% by weight relative to the weight of the cellulose acetate tow band. In addition to the hydrophilizing agent having an HLB value of 16 or more, a fiber oiling agent may also be adhered onto the surface of the crimped cellulose acetate tow band in an amount of 0.2 to 2% by weight relative to the weight of the cellulose acetate tow band.

The invention discloses a nano-silver antibacterial sanitary pad and a production method thereof, and relates to the field of physiological hygiene products. The nano-silver antibacterial sanitary pad comprises a surface layer, an absorption layer and a bottom layer, wherein the absorption layer is formed by compounding non-woven fabric, the bottom layer is formed by compounding a PE breathable film and non-woven fabric, and the surface layer is composed of a base material and antibacterial liquid. The preparation method of the nano-silver antibacterial sanitary pad comprises the three steps of antibacterial liquid preparation, raw material preparation and fitting forming. According to the nano-silver antibacterial sanitary pad and the preparation method thereof, the antibacterial liquid contains nano-silver and O-carboxymethyl chitosan, so that the sanitary pad has excellent antibacterial ability, the female infection risk is reduced, and physiological hygiene and health of women are ensured; the antibacterial liquid containing the nano-silver material is attached to the surface layer in an impregnation mode, so that the overall antibacterial ability is improved; and the surface layer filled with the antibacterial liquid after impregnation is dried in an extrusion mode, so that the loss of the antibacterial liquid is reduced, and the utilization rate of the antibacterial liquid is increased.

The invention provides a TVS (Transient Voltage Suppressor) with a deep trench isolation structure, which comprises a substrate and an epitaxial layer with the type being opposite to that of the substrate, and is characterized in that the epitaxial layer is provided with a doping layer with the type being the same as that of the substrate, the periphery of the TVS is provided with an annular deep trench, the deep trench is filled with an insulation medium, the doping layer at the inner side of the deep trench is provided with a contact hole, metal is led out to act as a first electrode, the doping layer is covered with an interlayer dielectric to isolate the first electrode and the deep trench, the first electrode is provided with a passivation layer, and the passivation layer is provided with a hole used for leading out the first electrode; metal is led out from the back of the substrate to act as a second electrode; and the deep trench runs through the doping layer and the epitaxial layer and extends to the substrate. According to the invention, side isolation of a PN junction is realized, and the PN junction is filled with an insulating material so as to reduce side electric leakage of the PN junction; the mode of deep trench isolation is adopted, the occupied area is small, and the size of a chip can be significantly reduced; and the epitaxial thickness is small, a rebound is achieved in reverse conduction, the avalanche breakdown electric leakage is smaller than an ordinary PN junction, and the conduction is faster.

The invention discloses a scroll compressor with an axially flexible seal. Two backpressure cavities are arranged between a dynamic vortex plate 3 and a support frame 16, and are respectively communicated with a scroll compression cavity and an exhaust cavity, the dynamic vortex plate 3 and a static vortex plate 2 are axially close, so that an axial seal of the dynamic vortex plate 3 and the static vortex plate 2 is realized, and sliding abrasion and power consumption between the dynamic vortex plate 3 and a thrust surface 24 of the support frame 16 can be reduced.

The invention discloses a 3D printing medical mask, which comprises a face side contacting with a face and an instrument side contacting with an instrument. The face side is characterized by obtaining personalized data for three-dimensional reconstruction through face scanning, and generating a face-shape-fit face side 3D data file; the instrument side is characterized by carrying out scanning on a conventional mask to obtain data for three-dimensional reconstruction, or carrying out correction according to clinical requirements to obtain a 3D data file; by jointing the 3D data files of the face side and the instrument side, a 3D printing mask digital file is formed; and finally, a personalized 3D printing medical mask is generated through printing of a 3D printer. The 3D printing medical mask subverts a conventional mask making method, is fit to the face shape of a person, solves the problem of side leakage of the air, can be more effectively applied to the breathing machine and cardiopulmonary exercise test of a patient, can be fit to the face shape of an animal in a personalized manner, and can be applied to respiratory disease treatment and of the animal and clinic animal experiment.

The invention relates to the field of disposable hygienic products, in particular to a sanitary towel with a memory function. The sanitary towel solves the technical problems that an existing sanitary towel is easy to compact, so that the dry and comfortable performance is poor, bacteria are easy to breed, and gynecological diseases are easy to occur. The sanitary towel comprises a body, wherein the body comprises a bottom film, a surface layer and a water absorption layer clamped between the bottom film and the surface layer, the water absorption layer comprises a main absorption body close to the front end of the length direction and a secondary absorption body close to the rear end of the length direction, and a memory foam layer is arranged at the portion, located below the main absorption body, on the bottom film. The side, away from the rear end of the length direction, of the secondary absorption body is located below the memory foam layer, and the absorption performance of the secondary absorption body is smaller than that of the main absorption body.

The invention relates to the technical field of sanitary napkins, specifically to a degradable sanitary napkin and a preparation method thereof. The sanitary napkin comprises a liquid suction part, an anti-leakage part, waterproof bottom films and two symmetrically-arranged flanks; the liquid suction part comprises a water-soluble nonwoven cloth layer, a water-soluble cotton layer, an absorption core layer and a reverse osmosis layer which are sequentially arranged from top to bottom; the anti-leakage part extends outwards from the surrounding edge of the reverse osmosis layer, wraps the edges of the water-soluble nonwoven cloth layer, the water-soluble cotton layer and the absorption core layer, and is folded to the upper surface edge of the water-soluble nonwoven layer; the two flanks are symmetrically arranged on the two sides of the anti-leakage part; the waterproof bottom films are arranged on the upper surface of the reverse osmosis layer and the lower surfaces of the two flanks; a sticking layer is arranged on the lower surface of each of the waterproof bottom films. The degradable sanitary napkin provided by the invention has the benefits that the structure is novel and simple; with the adoption of the water-soluble nonwoven cloth layer and the water-soluble cotton layer, the degradability after the sanitary napkin is dissolved in water can be improved; in addition, the arranged anti-leakage part can not only wrap the edge of the liquid suction part, but also reduce and prevent the side leakage of the sanitary napkin. Therefore, the practicability is high.

The invention discloses a double-waistline paper diaper. The double-waistline paper diaper comprises a paper diaper body, wherein second elastic strips are fixedly connected to the upper end and the lower end of the paper diaper body respectively; the paper diaper body comprises a cotton lining, a first breathable composite non-woven fabric layer and a second breathable composite non-woven fabriclayer; the first breathable composite non-woven fabric layer is arranged on one side of the cotton lining; the second breathable composite non-woven fabric layer is arranged on the other side of the cotton lining; and the cotton lining, the first breathable composite non-woven fabric layer and the second breathable composite non-woven fabric layer are pressed by hot air to form the paper diaper body. According to the double-waistline paper diaper, the waistline of the whole mechanism can be adjusted according to the actual situation of a user, and the first elastic strips can be adjusted underthe action of an adjusting mechanism so as to change the tightness degree, so that the practicability of the whole mechanism is greatly improved, the double-waistline paper diaper is suitable for different users, the use comfort of the users is improved, the use method is simple, the practicability is high, and popularization is convenient.

The present invention relates to an encapsulated semiconductor device (20) provided on a flexible substrate (1), a method of providing an at least partially encapsulated semiconductor device (20) on a flexible substrate (1) and a software product for providing an at least partially encapsulated semiconductor device (20) on a flexible substrate (1). In a preferred embodiment, an encapsulation method is presented in which the organic layer (3) of an inorganic / organic / inorganic multilayer barrier (5) on a plastic foil (1) as a substrate is removed at the edges of an OLED (13). The edges are subsequently sealed with a standard TFE process to encapsulate the OLED (13). This enables cuttable OLEDs (20) that are cut out of a larger plastic substrate (1) and gives a method to reduce side leakage in OLEDs (20) that have been manufactured in a roll-to-toll process.

The invention relates to a paper diaper absorption core body. The paper diaper absorption core body sequentially comprises a core body upper layer, a first macromolecule layer, fluffy cotton, a second macromolecule layer and a core body lower layer from top to bottom, and is characterized in that grooves without macromolecule absorption particles are formed in the first macromolecule layer and the second macromolecule layer correspondingly. The paper diaper absorption core body has the advantages of being high in instant absorption effect and capable of effectively preventing side leakage, the problems that an existing paper diaper absorption core body is prone to breakage, poor in diffusivity, prone to side leakage and the like are solved, the gel blocking phenomenon is reduced, and the utilization rate of the macromolecule absorption particles is increased. The invention further provides a preparation method of the paper diaper absorption core body.

The invention discloses a house construction concrete pouring workbench, and relates to the field of house construction concrete pouring. The workbench comprises a base, a connecting frame verticallyconnected with the base in the sliding mode and a lifting assembly arranged at the top end of the base and driving the connecting frame to slide. One side of the top end of the connecting frame is horizontally and fixedly connected with a guiding rod, and the connecting frame is provided with a containing box in sliding connection with the guiding rod. The guiding rod is provided with a driving member for driving the containing box to slide. The top end of the containing box is fixedly connected with an insertion pipe in insertion connection with a pouring pipe. One side of the containing boxaway from the guiding rod is provided with a plurality of discharging ports, the bottom ends of the discharging ports are hinged with a guiding plate, and the guiding plate can be rotated to close thedischarging ports. During pouring, the pouring pipe is inserted into the insertion pipe, so that concrete enters the containing box. The concrete in the containing box is discharged from the discharging ports and poured into the position to be poured through the guiding plate. The different positions can be poured conveniently by means of sliding of the containing box in the connection.

The invention discloses a multifunctional taste atomizer. The multifunctional taste atomizer comprises a first filter cotton, a solid powder, a second filter cotton, a shell, a glass fiber tube, an oil storage cotton, an electrode assembly, and a heating element; the first filter cotton is accommodated in the shell and is located at a port of a first end of the shell; a first end of the solid powder is attached to the first filter cotton; the second filter cotton is accommodated in the shell; a second end of the solid powder is attached to the second filter cotton; the glass fiber tube is accommodated in the shell; an oil storage cavity is formed between the outer wall of the fiber glass tube and the inner wall of the shell; the oil storage cotton is accommodated in the oil storage cavityand is used for storing e-liquid; the heating element is arranged in the glass fiber tube; a hollow channel of the glass fiber tube and the hollow channel of the shell form an air passage; the electrode assembly is located at a second end of the shell; the electrode assembly and the heating element are electrically connected through a first lead and a second lead; and the solid powder is a substance that is edible and has a taste. The multifunctional taste atomizer does not need to add another taste bar, has no other tedious operations, and also reduces waste of the taste bar.

The invention discloses an algae leaf body side leakage prevention sanitary napkin and belongs to the field of sanitary napks. According to the sanitary napkin, algae leaf bodies are arranged in a front end direction and a rear end direction along a central area of a sanitary napkin body, when the central area of the sanitary napkin body absorbs a certain amount of menstrual blood and spreads to a hollow spherical shell and a leaf dissolving ball, the leaf dissolving ball and the hollow spherical shell can be disconnected, a liquid pressing rope piece is driven by the leaf dissolving ball to move, on one hand, the liquid pressing rope piece extrudes the sanitary napkin body after menstrual blood is absorbed and promotes the menstrual blood to flow out, on the other hand, the leaf dissolving ball moves to generate certain negative pressure, and under a combined action of the liquid pressing rope piece and the leaf dissolving ball, the menstrual blood absorbed by the sanitary napkin body is pressed out and drained into the hollow spherical shell to be accumulated, therefore, the central area of the sanitary napkin body recovers a certain secondary absorption capacity, menstrual blood flowing out of a human body is effectively and continuously absorbed, and a situation of side leakage of the sanitary napkin body is effectively reduced.

The invention discloses a method for constructing an underground diaphragm wall joint. The method refers to a slurry tank, a plurality of diaphragm wall channel sections are formed in the slurry tank, seams are formed between the adjacent diaphragm wall channel sections, a positioning piece is arranged at the top of each diaphragm wall channel section, the tops of the positioning pieces are connected with leakage detecting chambers, the bottoms of the leakage detecting chambers communicate with a plurality of ventilation pipes, the positions, corresponding to the ventilation pipes, of the tops of the leakage detecting chambers communicate with second leakage detecting channels, and the tops of the second leakage detecting channels communicate with mounting grooves. The positioning pieces are pre-buried in all the diaphragm wall channel sections correspondingly, the leakage detecting chambers are formed in the tops of the positioning pieces, permeability detection is conducted on the interiors of the leakage detecting chambers, after it is detected that no air leaks, leakage detection is conducted through the second leakage detecting channels, cavities and the ventilation pipes, if it is detected that leakage occurs, concrete is directly introduced for leaking stoppage, after leaking stoppage, construction can be completed only by pulling out the positioning pieces, simpleness and convenience are achieved, and leakage detecting of all the diaphragm wall channel sections in the slurry tank can be completed.

The invention discloses a house construction concrete pouring workbench, and relates to the field of house construction concrete pouring. The workbench comprises a base, a connecting frame verticallyconnected with the base in the sliding mode and a lifting assembly arranged at the top end of the base and driving the connecting frame to slide. One side of the top end of the connecting frame is horizontally and fixedly connected with a guiding rod, and the connecting frame is provided with a containing box in sliding connection with the guiding rod. The guiding rod is provided with a driving member for driving the containing box to slide. The top end of the containing box is fixedly connected with an insertion pipe in insertion connection with a pouring pipe. One side of the containing boxaway from the guiding rod is provided with a plurality of discharging ports, the bottom ends of the discharging ports are hinged with a guiding plate, and the guiding plate can be rotated to close thedischarging ports. During pouring, the pouring pipe is inserted into the insertion pipe, so that concrete enters the containing box. The concrete in the containing box is discharged from the discharging ports and poured into the position to be poured through the guiding plate. The different positions can be poured conveniently by means of sliding of the containing box in the connection.

The invention relates to the field of hygienic products, and discloses an absorption core body and an application thereof. The absorption core comprises a central absorption area and a peripheral absorption area, the peripheral absorption area is arranged around the central absorption area, the vertical height of the central absorption area is lower than that of the peripheral absorption area, anda plurality of holes are formed in the central absorption area and the peripheral absorption area in the height direction. According to the absorption core body disclosed by the invention, a sanitarynapkin absorption core body integrally forms a concave structure with a flat outer part and a concave inner part, so that a menstrual blood storage and absorption space with a larger volume is created; and the diameters of the holes of the central absorption area and the peripheral absorption area are changed in the height direction, so that the comfort of a user is guaranteed while the absorption rate is increased and the upward reverse osmosis of menstrual blood is reduced according to the actual situation.

The invention relates to the field of disposable hygienic products, in particular to an all-directional leakage-proof absorbent article, which comprises a body, an upper-layer absorber arranged in the body, and leg circumference parts arranged on the body and located on the two sides of the upper-layer absorber in a width direction; each leg circumference part comprises at least two leg circumference material layers and a leg circumference elastic body clamped between the two leg circumference material layers; the body has a longitudinal direction in a length direction and a transverse direction in the width direction; a lower-layer absorber is arranged in the body and located below the upper-layer absorber; the width of the lower-layer absorber is greater than that of the upper-layer absorber; the lower-layer absorber extends into the leg circumference parts along the two transverse sides of the body to form absorptive flanges; the middles of the absorptive flanges are not bonded with the upper-layer absorber; and a flow guide direction of the middle of each absorptive flange is in the longitudinal direction or the transverse direction. The articles solves the technical problem of an existing side leakage prevention effect is insufficient. Then, the invention further provides a forming process of the all-directional leakage-proof absorbent article.

The invention provides an SOI (silicon on insulator) field effect transistor capable of reducing side leakage and a preparation method of the SOI field effect transistor, and the transistor comprisesa graphical SOI substrate which is provided with a bottom substrate, an insulating layer and a top semiconductor layer in the shape of a semiconductor island, wherein the insulating layer is providedwith a groove; the groove comprises a main body groove extending in the second direction and at least one expansion groove extending in the first direction, positioned at two ends of the main body groove and communicated with the main body groove; the semiconductor island completely covers the groove and comprises a first semiconductor layer extending in the first direction and a second semiconductor layer extending in the second direction, and the second semiconductor layer comprises a second main body semiconductor layer located above the main body groove and a second extended semiconductorlayer covering the extended groove; a gate structure is formed on the second semiconductor layer of the semiconductor island; and the source region and the drain region are formed at two ends of the first semiconductor layer. The expansion grooves communicated with the main body groove are formed in the two ends of the main body groove, so that the leakage resistance is effectively increased, andthe side leakage of the groove is reduced.

The invention relates to the field of disposable sanitary products, in particular to a sanitary napkin with a memory function, which solves the technical problems of poor dryness, bacteria breeding and gynecological diseases caused by the existing sanitary napkins being easily compacted. It includes a main body, the main body includes a bottom film, a surface layer, and a water-absorbing layer sandwiched between the bottom film and the surface layer, and the water-absorbing layer includes a main absorber near the front end in the longitudinal direction and a secondary absorber near the rear end in the longitudinal direction , the bottom film is located below the main absorber with a memory cotton layer, the side of the secondary absorber away from the rear end in the longitudinal direction is located under the memory cotton layer, and the absorption performance of the secondary absorber is less than that of the main absorber performance.

An intravaginal device has a fluid storage element and at least one fluid transport element in fluid communication with the fluid storage element. The at least one fluid transport element has a first plate and a second plate coupled to the first plate. The second plate is capable of separating from the first plate sufficiently to provide inter-plate capillary action. The at least one fluid transport element is bendable about an axis substantially parallel to the longitudinal axis of the fluid storage element. The invention also includes methods and apparatus useful in the production of an intravaginal device.

The invention relates to a pneumatic explosive charging spray head for an upward medium-length hole. The pneumatic explosive charging spray head has the technical scheme that the pneumatic explosive charging spray head is structurally characterized in that the right end of a rotor (1) is connected with an inner ring of a bearing connecting ring (2); the left end of an outer ring of a bearing (3) is connected with an outer ring of the bearing connecting ring (2); the bearing (3) is arranged at the left end of a connector (4). Three passages (6) in twisted distribution by using the axial line of the rotor (1) as the center are arranged inside the rotor (1); the center line of each passage (6) is a cylindrical spiral line; the right end of the rotor (1) is inwards provided with a conical cavity (5); the bottom surface of the conical cavity (5) is coincident with the right end surface of the rotor (1). Straight flow explosives passing through a connector are converted into rotational flow explosives around the passage wall direction by the spiral passages (6), so that the explosives do rotational motion in explosive charging holes to form explosive rotational flow; the explosives can be stably, uniformly and compactly charged and filled along the explosive charging holes. The pneumatic explosive charging spray head has the characteristics that the use is convenient; the charging and filling density is high; the explosive charging powder return rate can be effectively reduced; the work environment is protected.

The invention provides a TVS (Transient Voltage Suppressor) with a deep trench isolation structure, which comprises a substrate and an epitaxial layer with the type being opposite to that of the substrate, and is characterized in that the epitaxial layer is provided with a doping layer with the type being the same as that of the substrate, the periphery of the TVS is provided with an annular deep trench, the deep trench is filled with an insulation medium, the doping layer at the inner side of the deep trench is provided with a contact hole, metal is led out to act as a first electrode, the doping layer is covered with an interlayer dielectric to isolate the first electrode and the deep trench, the first electrode is provided with a passivation layer, and the passivation layer is provided with a hole used for leading out the first electrode; metal is led out from the back of the substrate to act as a second electrode; and the deep trench runs through the doping layer and the epitaxial layer and extends to the substrate. According to the invention, side isolation of a PN junction is realized, and the PN junction is filled with an insulating material so as to reduce side electric leakage of the PN junction; the mode of deep trench isolation is adopted, the occupied area is small, and the size of a chip can be significantly reduced; and the epitaxial thickness is small, a rebound is achieved in reverse conduction, the avalanche breakdown electric leakage is smaller than an ordinary PN junction, and the conduction is faster.