43results about How to "Reduce electric field distortion" patented technology

A liquid crystal display includes a first substrate, a first field generating electrode arranged on the first substrate and including first and second cutouts, and a second substrate facing the first substrate. A second field generating electrode is arranged on the second substrate and includes a third cutout, and a liquid crystal layer is interposed between the first and second field generating electrodes. A column spacer is interposed between the first and second substrates and is disposed in the first cutout region.

A liquid crystal display and a manufacturing method are provided. A liquid crystal display according to an exemplary embodiment of the present invention includes: a first substrate; a second substrate facing the first substrate; a liquid crystal layer interposed between the first substrate and the second substrate, and including liquid crystal molecules; a first electrode positioned on the first substrate; an insulating layer positioned on the first electrode; a second electrode positioned on the insulating layer; and a third electrode positioned on the second substrate, wherein the second electrode includes a plurality of branches and a slit between neighboring ones of the branches, and a width of the slit is more than about two times to less than about five times a width of its corresponding branches.

A manufacturing method of a liquid crystal display includes forming a sacrificial layer on a liquid crystal panel, forming an etch stop layer on the sacrificial layer, forming a photo resist pattern on the etch stop layer, completing the etch stop layer using the photo resist pattern as a mask, ashing the photo resist pattern and the sacrificial layer by using the completed etch stop layer as a mask, forming a microcavity by removing a portion of the sacrificial layer and forming a liquid crystal layer in the microcavity.

The invention relates to a stress control body for a plastic insulation high-voltage and direct-current cable terminal. The stress control body for the plastic insulation high-voltage and direct-current cable terminal aims at solving the problems that electric fields in an existing plastic insulation high-voltage and direct-current cable terminal are distributed unreasonably, and a qualified plastic insulation high-voltage and direct-current cable terminal with the voltage more than 160kV does not exist. The stress control body for the plastic insulation high-voltage and direct-current cable terminal is composed of a strengthening insulator and a stress cone, wherein the stress cone is arranged on one side end port of the strengthening insulator, the stress cone is in a horn shape, the curve of the inner conical surface of the stress cone is a tri-bezier curve, and the other side end port of the strengthening insulator is in a trapezoid shape. After the diameter of the stress control body for the plastic insulation high-voltage and direct-current cable terminal is expanded, the stress control body for the plastic insulation high-voltage and direct-current cable terminal is installed on the end portion of a cable. The stress control body for the plastic insulation high-voltage and direct-current cable terminal is applied to the electricity field.

The invention discloses a transient strong electric field measuring system for long air gap discharging. The transient strong electric field measuring system comprises a laser device used for emittinga stable monochromatic linear polarization laser, a polarization maintaining optical fiber used for transmitting the monochromatic linear polarization laser and maintaining a polarization state of the monochromatic linear polarization laser, an integrated optical device used for modulating the monochromatic linear polarization laser in the transient strong electric field environment, and a photoelectric detector used for collecting and processing modulated laser signals to obtain to-be-measured applied electric field strength. The transient strong electric field measuring system has the measuring properties of strong electric field measuring range, low distorsion, anti-electromagnetic interference, high-frequency band and high stability, and has the advantages of small size, high measuring precision and the like, and the practical demand for quantitative measuring of the space electric field in the long air gap discharging process is met.

The invention provides an electron beam axial velocity measurement system which comprises a capacitive probe device, a collector cavity structure, a voltage integral and transmission circuit, a voltage measurement device and a current measurement device. The capacitive probe device comprises a main cavity structure and an electron beam induction ring; the collector cavity structure is communicated with the main cavity structure and is in a shape of a spindle with a large middle and two small ends; the front end of the voltage integral and transmission circuit is electrically connected to the electron beam induction ring and used for converting inductive charge generated when electron beams penetrate through a capacitive probe into voltage signals; the voltage measurement device is electrically connected to the rear end of the a voltage integral and transmission circuit; the current measurement device is electrically connected to the collector cavity structure. By means of the electron beam axial velocity measurement system, influence of stray electrons during measurement is reduced, and measurement precision of electron beam axial velocity is increased.

A fluid-insulated electrical apparatus includes a grounded tank which is an airtight metal vessel filled with an insulating fluid. A conductor to which a high voltage is applied is disposed in the grounded tank. A metal plate that is press-processed to have an inclined portion and a groove between adjacent head top portions is fixed to and electrically connected to an inner wall of the grounded tank.

The invention belongs to the technical field of transformer packaging, and particularly relates to a high-frequency transformer, and a packaging method and an application thereof. The packaging method comprises the following steps: placing high-frequency transformer accessories in a mold, filling the mold with a packaging material, curing, demolding, cooling to a room temperature, and carrying out temperature treatment, wherein the temperature treatment is carried out in any one of the following modes: mode 1: cooling to -30 to -20 DEG C and keeping for 1-24 hours, heating to -10 to 10 DEG C and keeping for 1-24 hours, and heating to 80 to 120 DEG C and keeping for 1-72 hours; mode 2: cooling to -30 to -20 DEG C, keeping for 1-24 hours, heating to 80-120 DEG C, and keeping for 1-72 hours; mode 3: raising the temperature to 80-120 DEG C, and keeping the temperature for 1-72 hours; and mode 4: heating to 80-120 DEG C, keeping for 1-72 hours, cooling to -30--20 DEG C, and keeping for 1-24 hours. According to the packaging method provided by the invention, after curing is completed, temperature treatment is carried out so that an internal stress of the high-frequency transformer can be redistributed, electric field distortion caused by stress concentration is reduced, partial discharge is reduced, and the packaging method is suitable for packaging of the high-frequency transformer.

The present invention relates to an ultra-high voltage direct current power cable. Specifically, the present invention relates to an ultra-high voltage direct current power cable enabling the simultaneous prevention or minimization of electric field distortion, DC dielectric strength degradation and impulse breakdown strength degradation caused by the accumulation of space charge in an insulator.

The invention relates to the technical field of electric power equipment, in particular to a conical insulator with a VFTO suppression function. The conical insulator includes a center insert, an insulation area, a creepage area and a fixed flange, wherein the center insert is arranged at the top end of a hollow cone, and the end, close to the center insert, of the cone is provided with the insulation area, and the area except the insulation area is the creepage area; the bottom of the creepage area is connected with the fixed flange. When an external VFTO acts on the surface of the insulator, the resistivity of nonlinear packing in the local area of the creepage area decreases rapidly under the action of transient high voltage provided by the VFTO, so that charges accumulated on the surface of the insulator are dissipated in the propagation direction of the creepage area and the fixed flange, and therefore charge accumulation which is formed on the surface of the conical insulator by the VFTO is inhibited; therefore, the reliability of the insulator is maintained, electric field distortion on the surface of the insulator is reduced, and the stability of running of GIS equipment is improved.

The invention discloses a device for treating micro-stacking structure insulating material surfaces by discharge plasma. The device is characterized in that one end of a high-voltage leading electrodeis connected with a pulse power supply through a power supply high-voltage output terminal, the other end of the high-voltage leading electrode is connected with a high-voltage electrode through a high-voltage conducting rod, a grounding electrode is arranged under the high-voltage electrode, connected with a base through a grounding conducting rod and grounded, and a treated test sample is fixedbetween the high-voltage electrode and the grounding electrode and fitted closely with the high-voltage electrode and the grounding electrode in a gapless manner. The invention further discloses a method for treating the micro-stacking structure insulating material surfaces by the discharge plasma. The method includes the steps: 1 treating the device according to connecting assembly of equipment;2 placing the treated test sample and fixing the treated test sample between the high-voltage electrode and the grounding electrode in the gapless manner; 3 turning on the pulse power supply to formuniform glow discharge; 4 eroding the surface of the treated test sample by low-temperature plasma generated by glow discharge.

The invention provides a noise lowering treatment method for a corona audible noise of a high-voltage power transmission line. The noise lowering treatment method for the corona audible noise of the high-voltage power transmission line comprises the following steps that S1, the surface of the high-voltage power transmission line is cleaned; S2, the surface of the high-voltage power transmission line is evenly coated with hydrophobic paint. By the adoption of the noise lowering treatment method for the corona audible noise of the high-voltage power transmission line, accumulation of water dropsand dirt on the surface of the power transmission line can be effectively reduced, so that the electric field distortion on the surface of a wire is reduced, so that the corona starting voltage of the high-voltage power transmission line is improved, and then the corona audible noise of the high-voltage power transmission line during severe weather can be lowered.