1760results about How to "Guaranteed insulation performance" patented technology

The invention discloses a heat-conducting wire cable electric-insulation material or sheath material which comprises the following components in parts by weight: 100 parts of ethylene and copolymer thereof and / or ethylene propylene diene monomer, 0-25 parts of compatilizer, 0-280 parts of flame retardant, 0.3-8 parts of antioxidant, 0.5-6 parts of lubricant, 0.01-10 parts of crosslinking assistant, 0-30 parts of polymer elastomer, 0-8 parts of coupling agent, 0-12 parts of color master batch and 1-35 parts of heat-conducting material. The heat-conducting wire cable electric-insulation material or sheath material has excellent heat conductivity and electric insulativity; and the cross network formed by piling the heat conducting material, the ethylene and copolymer thereof and other components can effectively perform heat conduction, so that the heat conductivity coefficient is up to 3.305-4.867 w / m.k, and the volume resistivity is 10<14> ohm*cm, thereby ensuring the electric-insulation effect and heat-conducting effect of the wire cable and the, and further ensuring the normal operation of the cable.

The invention provides an FPGA (field programmable gate array) control-based all-solid-state high-voltage nanosecond pulse generator, and belongs to the field of bio-electromagnetic technology. The nanosecond pulse generator mainly comprises a power supply system, a pulse forming system, a pulse measurement system, an FPGA control system, a signal conversion system and a portable computer. In the generator, the output pulse amplitude is between 0 and 10kV, the pulse width is between 200 and 1000ns, the pulse frequency is between 1 and 1000Hz, the falling edge is between 30 and 40ns, the number of pulse is between 1 and 1000, and particular parameters are determined according the requirement of tumor treatment. The FPGA control-based all-solid-state high-voltage nanosecond pulse generator has the characteristics of intelligent regulation of pulse parameters (pulse amplitude, width, frequency and number), optical fiber transmission, high parameter accuracy, long service life, small size, low failure rate, good security and the like; and the generator outputs high pulse frequency, and is advantageous to quick searching of the optimal window parameters for inducing tumor cell apoptosis by virtue of intelligent regulation, so that the tumor treatment effect is improved. The FPGA control-based all-solid-state high-voltage nanosecond pulse generator can be widely applied to tumor treatment.

An electroless plating layer with strong adhesion is optionally formed only on a portion to be a circuit, and other non-circuit portions are not roughened. A laser beam (2) with a wavelength of 405-1064nm is optionally irradiated onto the portion to be a circuit (11) of a synthetic resin substrate (1), and an ionic catalyst of palladium is caused to be adsorbed and then reduced to metallic palladium by a reducing agent. Subsequently, an electroless plating layer (3) is formed on the portion to be a circuit (11). Since the portion to be a circuit (11) is surface modified and roughened, the ionic catalyst firmly attaches, and the electroless plating layer (3) strongly adheres. The ionic catalyst does not adsorb onto the non-circuit portions (12) not irradiated by the laser beam (2), and thus the electroless plating layer (3) is not formed thereon.

The invention discloses a water-based non-graphite type lubricant, which is characterized by comprising the following ingredients in percentage by weight: 26%-35% of inorganic substance with layered lattice structures, 10%-15% of high-temperature-resistant lubricant, 12%-24% of suspending agent, 30%-47% of high-temperature adhesive and 1%-3% of adjuvant. The water-based non-graphite type lubricant is an environment-friendly lubricant for hot die forging, can replace a graphite type lubricant, and is especially suitable for the hot die forging of metal, in particular, for the hot die forging of large-sized aluminum pieces. The invention further discloses a preparation method of the water-based non-graphite type lubricant. The preparation method has the advantages of simple preparation process and excellent film-forming performance.

A copper indium gallium selenium (CIGS) thin film solar cell provided with an aluminum nitride (AIN) thin film layer comprises a substrate, a molybdenum (Mo) back electrode layer, a CIGS absorbed layer, a cadmium dating sulphide (CdS) buffer layer, an intrinsic zinc oxide (i-ZnO) layer, a mixing zinc oxide (ZnO:AI) window layer and front electrode nickel aluminum. The AIN thin film layer is arranged between the substrate and the Mo back electrode layer and serves as an electric insulation impurity barrier layer when the substrate is made of metal, the AIN thin film layer serves as an impurity barrier and stress intermediate layer when the substrate is made of glass, and the AIN thin film layer serves as a heat buffer layer when the substrate is made of polymer. The thin film solar cell has the advantages of adopting simple and cheap magnetic control sputtering technology to prepare an AIN thin film to serve as the impurity barrier layer or the electrical insulating layer of the substrate, being capable of having good resisting effects and keeping insulation characteristics of metal atoms even through the solar cell is prepared at high substrate temperature, and providing prerequisite conditions for manufacturing inline type tinsel substrate thin film solar cells.

The invention discloses a method for measuring dielectric properties of diamond anvil cells in situ and belongs to the technical field of electromagnetic measurement under high voltage. The method comprises the following steps of firstly, assembling the diamond anvil cells, i.e. respectively forming round electrodes on the anvil surfaces of two diamond anvil cells, wherein an insulating layer is arranged on the inner side wall of a sample cavity of a composite insulating cushion; secondly, performing measurement, i.e. using a frequency response analysis meter to obtain relation patterns between an impedance real part and an impedance virtual part under different pressures; and finally, performing data processing, i.e. using Zview software and an electromagnetic metering formula related to dielectric properties to obtain the relative dielectric constant epsilon r, the dielectric constant real part epsilon', the dielectric constant virtual part epsilon'', the loss tan theta and the like. The shapes and the positions of the electrodes are fixed, and meanwhile, correction is performed because of the influence of fringe effect on a measuring result; and the prepared composite insulating cushion ensures complete insulation of the inner wall of a voltage cavity, so that the method for precisely measuring the dielectric properties of a material in situ under high voltage is realized.

The invention relates to an adhesive with insulating and heat-conducting properties used at an ultralow temperature, the adhesive being a two-component adhesive obtained by mixing a mixture component A and a curing agent and conducting a curing reaction. Curing conditions of the curing reaction are heating the mixture at a temperature of 25 DEG C for 24 hours and then raising the temperature to 150 DEG C to heat for 6 hours. The mixture component A is a mixture obtained by uniformly mixing 100 parts by weight of epoxy resin, 6 parts by weight of silane coupling agent, and 100-1000 parts by weight of heat-conducting powder filler in a mechanical manner, wherein the heat-conducting powder filler is composed of 0-60 wt% of metallic heat-conducting powder and 40-100 wt% of nonmetallic heat-conducting powder. The adhesive of the invention has excellent insulating and heat-conducting properties at ultralow temperature, can overcome the disadvantages that existing heat-conducting adhesives can not be used at ultralow temperature and has bad heat conductivity at ultralow temperature, contains no diluents added during preparation and causes no pollution induced by micro-molecule volatilization in the cuing reaction.

Provided is a unipolar microsecond pulse high voltage power supply. The unipolar microsecond pulse high voltage power supply comprises a main circuit system (110) and a control system (100). The main circuit system (110) finishes energy storing and charging of a power module of each stage, and the power module of each stage finishes discharging to load under the control of drive signals of the control system (100) and outputs unipolar microsecond pulse high voltage. The control system (100) generates level signals, the level signals are transmitted to a switch drive circuit of the main circuit system for generating drive control signals, so that connection and disconnection of a main circuit system switch is controlled, and pulse output is obtained at the tail end of the main circuit system. Low voltage pulses obtained by each single stage power module through discharging on a load matching resistor are added for obtaining high voltage pulses, the pulses of a plurality of stages are added synchronously so that square-wave pulses can be obtained, and then the work mode of the control system (100) is a synchronous trigger mode. Triangular waves with step edges can be obtained through delayed adding, and then the work mode of the control system (100) is a delayed trigger mode.

The invention relates to a direct-plug water-sealed connector component, a plug thereof and a socket thereof. The connector component comprises a plug shell and a plug insulator which are connected together; a group of pin contact pieces are axially arranged on the plug insulator; a plug vulcanized body covers the front end and surrounding wall of the plug insulator through vulcanization; the rear end of the plug vulcanized body extends to seal and cover the front end of the plug shell; the pin contact pieces are fixed into a whole through the vulcanization by the plug vulcanized body; the parts, exposed from the plug vulcanized body, of the pin contact pieces form pin plug-in connection sections; the parts, close to the plug vulcanized body, of the pin plug-in connection sections are covered by a corresponding vulcanized protrusion extended from the front end of the vulcanized body to form vulcanized plug-in connection sections; the parts, on the front end of the vulcanized plug-in connection sections, of the pin plug-in connection sections are bare pug-in connection sections; the diameter of the bare pug-in connection sections is smaller than that of the vulcanized plug-in connection sections; and a plug-in connection guide part is arranged at the surface joint part of the bare pug-in connection sections and the vulcanized plug-in connection sections. The connector component can be plugged directly in water.

The invention provides an electrified thermal stretching testing device and a stretching testing method. The electrified thermal stretching testing device comprises a unidirectional stretching testing device and a temperature control device, wherein the unidirectional stretching testing device is insulated by a clamp. A temperature measurement unit, a power adjuster and a power supply device in the temperature control device are connected in series. According to the electrified thermal stretching testing device, an infrared temperature measurement sensor is used for monitoring the surface temperature of an electrified stretching testing piece at any time, so that the electrified thermal stretching testing device has the characteristics of rapid responding time, no contact, safety in utilization and long service life. Meanwhile, the temperature of the stretching testing piece in an electrified thermal stretching process can be basically stable so that the temperature of the stretching testing piece can be stabilized at different temperatures so as to be tested, and the research range of mechanical properties of materials is enlarged.

The invention provides high-strength, thermo-oxidative-aging-resistant and insulating silicone rubber and a preparation method thereof. The preparation method includes the following steps of aluminum hydroxide modification, wherein aluminum hydroxide of different grain diameters is mixed according to a certain proportion, and then surfactant is added for modification; calcium carbonate modification; fumed silica modification; mixing; discharging, remilling and straining to complete preparation of the high-strength, thermo-oxidative-aging-resistant and insulating silicone rubber. Aluminum hydroxide of different grain diameters is mixed, a better filling effect is achieved on gaps between molecular chains of silicone rubber raw rubber, cost is lower, the compatibility is further improved through modification, clustering is reduced, and the electrical insulation property and the flame-retardant property of the silicone rubber are guaranteed; nano calcium carbonate and fumed silica are modified, the silicone rubber has a better dispersion effect, the filling effect is improved accordingly, the mechanical performance and thermo-oxidative-aging-resistant performance of the silicone rubber are remarkably improved, the modification process is simple, and cost is low.

The invention provides a converter valve component used for flexible DC power transmission and IGBT submodules thereof. The converter valve component comprises an installing framework. A submodule crimping unit is fixedly arranged at the front part of the installing framework. The submodule crimping unit comprises an intermediate framework and two end plates. The intermediate framework is provided with at least two submodules and inter-module insulating stop blocks which are arranged in a spacing way along a left-and-right direction in turn. The two end plates are provided with two clamping devices. Each submodule comprises two IGBTs, three heat radiators and one thyristor. The two IBGTs and the three heat radiators are arranged in turn along the left-and-right direction in a mutual spacing way. One thyristor is arranged at the external side of the rightmost heat radiator. The corresponding fitting surface of the thyristor is fixedly installed at the external side surface of the rightmost heat radiator. The right side of the thyristor is provided with a conductive aluminum bar which is used for being matched with the rightmost heat radiator so as to clamp the thyristor. Multiple submodules can be connected in series and crimped via the two clamping devices in the submodule crimping unit so that the crimping and fixing structure of the submodules in the overall converter valve component can be effectively simplified.

The invention relates to a method and a device for testing the thermal physical property of a solid material with an independent probe by using a harmonic method. The device comprises the independent probe, a pressure adjusting part, a torque measuring part and a harmonic measuring unit, wherein the independent probe is positioned between two identical samples to be tested to form a sandwich structure and is arranged parallel to a sample fixing table; the pressure adjusting part is positioned and pressed on the upper end face of the first sample to be tested; the sandwich structure is arranged on the sample fixing table; the torque measuring part is sleeved on one end of the pressure adjusting part; the harmonic measuring unit is electrically connected with the independent probe; and a torsion value and contact thermal resistance between the independent probe and the two samples to be tested are fitted and calculated according to a harmonic measurement principle. In the test, the sandwich structure is arranged on a lug boss of the sample fixing table, the pressure adjusting part is adjusted until the torsion value is displayed to be the optimal torsion value, and then the thermal conductivity coefficient and the thermal diffusivity of the sample to be tested are tested by the harmonic method. Differences among thermal conductivity values of the samples to be tested under the condition of a plurality of torsion values smaller than the optimal torsion value are measured and calculated for obtaining the contact thermal resistances between the samples to be tested and the independent probe under the condition of the plurality of torsion values.

The invention provides a heat conduction insulating material, a heat conduction insulating strip and a method for preparing the heat conduction insulating material and the heat conduction insulating strip. The heat conduction insulating material comprises the following components by weight part: 4-40 parts of high-molecular base material; 1-20 parts of tackifying additive, wherein the tackifying additive contains a reaction group which is identical or analogous with at least one solidified active group in the high-molecular base material; and 40-85 parts of heat conduction insulating particles. The heat conduction insulating material of the present invention has good heat conduction insulating property and viscosity, and can adhere between a radiator and an electronic component without using a double faced adhesive tape or corona treatment.

The invention belongs to the field of chemical synthesis, and particularly relates to a full-water-based low-density soft polyurethane spraying composite polyether and a preparation method thereof. The composite polyether is composed of a component A and a component B in a weight ratio of 100:(100-105), wherein the component A is composed of polyether glycol A, polyether glycol B, polyester polyol, a crosslinking agent, a surfactant, a foaming agent, a catalyst, a flame retardant and an emulsifier; and the component B is polymethyl polyphenyl polyisocyanate or diphenylmethane diisocyanate. The preparation method comprises the following steps: adding the polyether glycol A, polyether glycol B and polyester polyol into a reaction kettle; adding the other raw materials in the component A, mixing, and barrelling to complete the production of the component A; and adding the component B, evenly mixing, atomizing, foaming, and forming and aging the foam to obtain the product. By using water as the foaming agent, the composite polyether provided by the invention achieves the goals of thermal insulation and heat preservation, and achieves the international standards in the aspects of elasticity, flame retardancy and sound insulation effect.

The invention discloses a device and a method for carrying out in-situ testing on the transport properties of conductor materials at high temperature and high pressure, and belongs to the field of high-pressure science and technologies and material science technologies. In the device, four copper wires (4) are introduced to a side face of a high-temperature and high-pressure synthetic assembling block and used as electrodes for measuring the resistivity, two pairs of thermocouples (10) are introduced for measuring seebeck coefficients, and welding points of a sample (5) and the electrodes as well as the sample (5) and the thermocouples (10) are fixed by using a pressure generated by a high-temperature and high-pressure device. The resistivity of the sample is calculated through measuring relative resistance values RA and RB and the thickness d of the sample subjected to pressurization; the seebeck coefficient of the sample is calculated through measuring a potential difference Vef between positive poles of the two pairs of thermocouples and a potential difference Vhg between negative poles of the two pairs of thermocouples. The method disclosed by the invention is simple, easy to implement, high in success rate, and good in experimental repetition rate; a problem that wires and the thermocouples are easy to fracture at the high pressure is solved; a situation that measured electrical signals are interfered by heating current is prevented, thereby ensuring the accuracy of results.

The invention relates to an online monitoring method and a device for the temperature of a high-temperature superconducting cable conductor. The method provided by the invention comprises the following steps of: adhering a low-temperature sensor (2) onto the high-temperature superconducting cable conductor (1), and leading out the test leads of the low-temperature sensor (2) through a four-lead method; leading the test leads of the low-temperature sensor (2) into a corresponding temperature optical fiber conversion module (3); connecting the temperature optical fiber conversion module (3) and a modularized distribution type I / O system (4); connecting the modularized distribution type I / O system (4) to a computer (6); processing the input signal in the computer, and displaying and storing the temperature of the high-temperature superconducting cable conductor (1). The online monitoring method and the device provided by the invention can carry out the accurate temperature monitoring of the high-temperature superconducting cable conductor in a liquid nitrogen temperature range, and simultaneously realize high-voltage isolation monitoring. The online monitoring method and the device provided by the invention have the advantages of good insulation and anti-interference property, simple structure, reliable run, low electricity consumption, long service life and low cost.

To prevent a bellows of a vacuum circuit breaker of tank type from being damaged, reduce the size of the vacuum circuit breaker, and prevent global warming from occurring. A high-pressure dry air is fed into a ground tank (2). A movable contact case (8) is supported at one end inside the ground tank (2) through an insulating supporting tube (5) and an insulating support (7), and a fixed contact case (9) is supported at the other end inside the ground tank (2) through a supporting insulator (6). A vacuum interrupter (10) is supported between the contact cases (8, 9). Bush terminals (20, 21) are connected to the top ends of conductors (35, 15) the bottom ends of which are connected to the contact cases (8, 9). The conductors (35, 15) are surrounded by the bushes (16, 17). The movable conductor (35) is formed in a pipe shape. Hermetical seal parts (37 to 41) are so formed that the inner peripheral side of a bellows (25) the outside of which is vacuum, the inside of the movable conductor (35), the inside of the support (7), and the inside of the movable contact case (8) is kept at the atmospheric pressure and the inside of the insulating support tube (5) is filled with the high-pressure dry air.

The invention relates to a laser direct structuring heat-conducting insulating resin and a preparation method thereof. The laser direct structuring heat-conducting insulating resin is prepared from the following raw materials in parts by weight: 35-55 parts of matrix resin, 40-60 parts of a heat-conducting agent, 5-8 parts of a laser additive, and 0.1-0.9 part of other ingredients. Compared with the prior art, the heat-conducting agent is added in the resin so as to realize heat conduction and insulation, meanwhile, the laser additive is also added so as to achieve the aim of laser direct structuring; the preparation method is mainly used in LED (Light-Emitting Diode) industry, can substitute steel with plastic, simplify process and reduce cost, and also can design circuits into the material, so that design can be more free and firmness is improved greatly.

The invention provides a stator for an electric rotary machine which can be built up without using exclusive equipment and which has superior mass-production properties and a fabrication method of the same. The stator (10) includes: a stator core assembly (20) formed by a stator core (21) and a plurality of coil bars (25); and a pair of base plate assemblies (30L, 30R) formed by base plates (31L, 31R) and a plurality of connection coils (40) and arranged at two sides of the stator core assembly (20).

The invention relates to a pole plate electrode system for a logging instrument. The pole plate electrode system for the logging instrument comprises an insulating plate (2), a pair of emission electrode plates (3) and electric buttons (7), wherein a pair of grooves is formed in the two ends of the insulating plate (2), the emission electrode plates (3) are transversely embedded into the grooves of the insulating plate (2), the electric buttons (7) are embedded into the middle of the insulating plate (2), and the emission electrode plates (3) are symmetrically arranged relative to the electric buttons (7).

The invention provides a control system of a live-working robot. The control system comprises a master control system module and a data exchange module. The master control system module comprises a first industrial personal computer and a second industrial personal computer. The industrial personal computers communicate through the data exchange module to achieve data interaction. The control system further comprises a target positioning module, a micro weather detection module, a mechanical arm control module, a power supply management module and a communication module. The invention furtherprovides the live-working robot which comprises the control system of the live-working robot and further comprises a frame for mounting the control system, a mechanical arm module, a datum plate tableboard module and a shell assembly. The datum plate table board module comprises a heat-dissipating module, a lithium battery pack, a tool quick change device, an adapter plate, a datum plate, a clamping mechanism, a laser positioning module, a sleeve recycling module, a cable clamp tool, a mechanical arm bracket and a video monitoring module.

The invention discloses an ion mobility spectrometry employing an electrospray / corona discharge dual-mode ion source. Switching of two ionization modes is achieved; and the range of a detectable sample is expanded. An ion source is provided with a liquid-cooling component and a heating film component, which are used for rapidly setting the working temperature of a spray needle, so that different requirements of the two ionization modes on the temperature of the spray needle are met; the flow range of an injected sample is expanded; and the detection sensitivity is improved. A trumpet-shaped space is adopted by an electrospray / corona discharge region between the ion source and a drift tube, so that the atomization efficiency on the sample from low-temperature liquid to a gaseous state is improved; the desolvation effect of the sample is improved; and the sample residue is reduced. The drift tube is manufactured by a metal ceramic sealing technology, so that the connection strength is high; the insulativity and the air tightness are good; and installation together with other components is facilitated. The drift tube and a preheating gas circuit are arranged in a heating cylinder with uniform temperature as a whole, so that the phenomenon of migrating ion cluster diffusion caused by non-uniform temperature of blowback air in a migration area is reduced; and the detection resolution capability is improved.

The invention discloses a device and method for detecting photovoltaic module-to-ground insulativity and a photovoltaic grid-connected power generation system. The detection device comprises a first detection resistor, a second detection resistor, a third detection resistor, a first switch device and a second switch device, wherein the first detection resistor is connected with an anode-to-ground resistor of a photovoltaic module in parallel; the second detection resistor is connected with a cathode-to-ground resistor of the photovoltaic module in parallel; the third detection resistor is connected with the first switch device in series; a series branch where the third detection resistor and the first switch device are located is connected with the second detection resistor in parallel, or the series branch is connected with the first detection resistor in parallel; the second switch device is used for controlling the conducting state between the common node of the first detection resistor and the second detection resistor and the ground wire of a photovoltaic inverter and is used for controlling the conducting state between the common node and the null line of a power supplying power grid. By the adoption of the technical scheme, reliability of detection on the photovoltaic module-to-ground insulativity is guaranteed.

The invention provides an aerogel composite heat insulation plate. The aerogel composite heat insulation plate is prepared from the following raw materials in parts by mass: 100 parts of ceramic fiber, 3 to 8 parts of an organic bonding agent, 5 to 15 parts of an inorganic bonding agent, 10 to 30 parts of aerogel powder and 0 to 15 parts of an infrared light shielding agent, wherein the aerogel powder is prepared from 5 weight percent to 15 weight percent of structural water. According to the aerogel composite heat insulation plate provided by the invention, the aerogel containing the partialstructural water is used as a filling material of a ceramic fiber plate and part of micron-pore structure in the ceramic fiber plate is changed into a nano-pore and micron-pore composite structure sothat the convection and conduction heat transfer of the ceramic fiber plate are reduced; the infrared light shielding agent is selectively added and is used as an infrared non-transparent substance inthe ceramic fiber plate, so that the radiation heat transfer of the ceramic fiber plate at high temperature is reduced.

The invention discloses a heat-shrinkable heat-conducting cable accessory, comprising the following components in parts by weight: 100 parts of ethylene and copolymer thereof, 0-25 parts of fire retardant, 0-80 parts of packing, 0.5-2.5 parts of light stabilizer, 0-6 parts of antioxidant, 1.5-6 parts of lubricating agent, 0-10 parts of coloring agent, 1-8 parts of coupling agent, 0-10 parts of modifier, 0-5 parts of crosslinking agent and 1-30 parts of heat-conducting material. The heat-shrinkable heat-conducting cable accessory disclosed by the invention has good thermal conductivity and insulativity, especially the campsite heat-conducting material and other components such as ethylene and the copolymer thereof and the like are stacked to form a cross network, so that effective heat conduction can be carried out, the heat-conducting coefficient can be up to 3.305-4.867w / m.k, the volume resistivity can be ensured at 10<15>ohm*cm, the insulating effect of the cable accessory is ensured, and the heat-conducting effect of the cable accessory can also be ensured, so as to ensure normal operation of the cable.

The invention discloses a halogen-free transparent flame-retardant photovoltaic encapsulating material and a preparation method of the halogen-free transparent flame-retardant photovoltaic encapsulating material. The material consists of a photovoltaic encapsulating base material, a phosphate flame retardant, an organic silicon flame retardant and a coupling agent-modified inorganic nano flame retardant and the like. By means of the flame retardant mechanism of a condensed phase of the phosphate flame retardant and combining a synergic flame retardant mechanism of the organic silicon flame retardant and the coupling agent-modified inorganic nano flame retardant, the additions of the flame retardants are effectively reduced, so that the characteristic of high transparency of the material is maintained while the flame retardance of photovoltaic encapsulation is improved; by adding other auxiliaries, performances of the halogen-free transparent flame-retardant photovoltaic encapsulating material such as insulating property, damp and heat resistance, ultraviolet aging resistance and the like satisfy the requirement of the photovoltaic encapsulating field.

The invention discloses an embedded touch screen and a display device. The embedded touch screen comprises multiple connection wire groups arranged on a layer different from a layer where self capacitance electrodes are located besides guide wires and the self capacitance electrodes, wherein each connection wire group comprises multiple segments of sub connection wires arranged at intervals, each sub connection wire of each connection wire group is corresponding to each self capacitance electrode, each sub connection wire and each self capacitance electrode corresponding to each sub connection wire are connected through at least one via hole which runs through an insulating layer, no via hole is formed in an overlapped area of each guide wire and each self capacitance electrode, and each guide wire is connected with the corresponding self capacitance electrode through at least one sub connection wire connected with the corresponding self capacitance electrode of each guide wire. The embedded touch screen guarantees that the via holes are evenly distributed by evenly forming the via holes in the areas of the embedded touch screen, corresponding to all the sub connection wires. Accordingly, the embedded touch screen can solve the problem that display frames are not even, caused by uneven distribution of via holes in an insulating layer in the prior art.