31results about How to "Increase the electric field" patented technology

An avalanche photo-detector (APD) is disclosed, which can reduce device capacitance, operating voltage, carrier transport time and dark current as well as increasing response speed and output power. Thus, an avalanche photo-detector (APD) with high saturation power, high gain-bandwidth product, low noise, fast response, low dark current is achieved. The APD includes an absorption layer with graded doping for converting an incident light into carriers, an undoped multiplication layer for multiplying current by means of receiving carriers, a doped field buffer layer sandwiched between the absorption layer and the multiplication layer for concentrating an electric field in the multiplication layer when a bias voltage is applied, and an undoped drift layer sandwiched between the absorption layer and the field buffer layer for capacitance reduction.

A semiconductor integrated device having a plurality of memory cells, each including a floating gate, a control gate and an auxiliary gate formed over a side surface of the floating gate through an insulator film. Auxiliary gates coupled to selected memory cells function to generate hot electrons and are alternately arranged with other auxiliary gates functioning to prevent write errors in the non-selected memory cells.

The invention discloses a packaging cover plate of a sensitivity-strengthened electric field sensor and a packaging method and relates to the technical field of electric field detection. The packaging cover plate comprises an inner core, a cover plate edge and an isolation ring, wherein the inner core is located in the middle of the cover plate and above the sensitive face of the packaged electric field sensor, and the sensitivity of the electric field sensor is effectively strengthened. The cover plate edge is used for connecting a packaging pipe housing. The isolation ring is located between the cover plate edge and the inner core to play supporting and isolation effects. In addition, the packaging convenience is further increased by adopting the structure. Correspondingly, the structure is successively prepared by adopting the packaging method of the corresponding electric field sensor.

A composite photonic structure element includes a photonic crystal and a multi-layer film. The photonic crystal is formed by alternately laying an active layer having a nonlinear effect for converting a fundamental wave into a second higher harmonic and an inactive layer having no nonlinear effect, so that the energy of the fundamental wave coincides with the photonic band gap end. The multi-layer film is formed by layering a plurality of sets of two types of thin films having different refractive indexes so as to reflect the fundamental wave. The multi-layer film is connected to both ends of the photonic crystal. The fundamental wave comes into one of the end faces and the fundamental wave is reciprocally reflected between resonators having a multi-layer film so that the intensity of the fundamental wave in the photonic crystal is increased. The fundamental wave is converted into a second higher harmonic in the active layer and the second higher harmonic is extracted outside from the other end face.

A system for mitigating electrostatic discharge (ESD) that may occur during egress from vehicles is provided. One embodiment comprises a narrow conductive electrode that is galvanically connected to the vehicle chassis, and that is applied to that one edge of a seat which is next to the door nearest that seat. For example, in the U.S., this edge will normally be the left edge of the driver's seat, or the right edge of the front passenger's seat. The electrode is substantially located on a normally unoccupied surface of the seat cushion. Other embodiments further include pointed shapes on the electrode to increase the electric field intensity, which may promote more complete discharging.

The invention provides an active capacitance pen which is used for operation on a capacitance touch panel (200). The active capacitance pen comprises a first sending unit (1), a second sending unit (2) and a control processing unit (5). The first sending unit (1) sends high-voltage signals to the capacitance touch panel (200). The second sending unit (2) sends order signals to the capacitance touch panel (200) and informs the capacitance touch panel (200) of the fact that the first sending unit (1) sends the high-voltage signals to the capacitance touch panel (200), so that the capacitance touch panel (200) generates measuring signals which are synchronous with the high-voltage signals. The control processing unit (5) generates the high-voltage signals and the order signals and sends the high-voltage signals and the order signals to the capacitance touch panel (200) respectively through the first sending unit (1) and the second sending unit (2), so that the capacitance touch panel (200) obtains the position information of the capacitance pen (100). According to the capacitance pen, the intensity of the signals received by the capacitance touch panel can be improved, locating accuracy is improved, mutual harmony between the capacitance pen and the capacitance touch panel can be improved, and the capacitance pen and the capacitance touch panel conduct timely response.

The present invention provides a capacitive pen for operating on a capacitive touch panel (200), which includes: a sending unit (1), which sends a high-voltage AC signal to the capacitive touch panel (200); the capacitive pen controls A processing unit (2), which generates the high-voltage AC signal, and sends the high-voltage signal to the capacitive touch panel (200) through the sending unit (1), so that the capacitive touch panel (200 ) measuring the position information of the capacitive pen (100) according to the high voltage AC signal. The capacitive stylus provided by the present invention sends a high-voltage AC signal to the capacitive touch panel so that the capacitive touch panel can be positioned according to the high-voltage AC signal. Since the high-voltage AC signal is strong, the signal-to-noise ratio and positioning accuracy can be improved.

Provided in the present disclosure is a capacitive pen for operating on a capacitive touch-control panel (200), comprising: a receiving unit (1) for receiving a measurement signal transmitted by the capacitive touch-control panel (200), a signal processing unit (5) for generating a high voltage signal synchronous with the measurement signal according to the signal received by the receiving unit (1), and a transmitting unit (2) for transmitting the high voltage signal to the capacitive touch-control panel (200) such that the capacitive touch-control panel (200) obtains the information of a capacitive pen (100). The capacitive pen of the present disclosure transmits a synchronous high voltage signal to enhance the sensing signal of a touch-control panel, such that the touch-control panel can sense a small-area conductor, thus expanding the function of the pen on the basis of finger touch control, and greatly improving user experience. In addition, the circuit is easy to realize, and has low cost and good compatibility.

The invention discloses a tunneling field effect transistor for effectively increasing the on-state current, which belongs to the field of semiconductor devices and is used for increasing the on-state current of the tunneling field effect transistor. In the present invention, the upper and lower gate dielectric layers of the tunneling field effect transistor are extended to the source region and partly covered to the source region, the surface of the gate dielectric layer on one side of the source region is covered with a metal gate, and the surface of the gate dielectric layer on the other side of the source region is covered with a bias electrode , the bias electrode and the metal grid on this side are separated by a partition wall to form an up-and-down asymmetric structure. By applying a bias voltage to the bias electrode, or using the metal work function difference between the bias electrode and the metal grid, the gate electrode is enhanced. The electric field perpendicular to the channel direction on the upper and lower sides of the covered part of the source region increases the strength of the carrier line tunneling, and the total carrier tunneling area and tunneling probability increase, thereby effectively increasing the device's on-state current.

A low-erosion radio frequency ion source is disclosed having a hollow body with conductive interior walls that define a cylindrical cavity, with a gas supply inlet for plasma-forming gases and a power supply inlet for injecting radio frequency energy into the cavity; an expansion chamber connected to the cavity by means of a plasma outlet hole; an ion-extraction aperture in contact with the expansion chamber; coaxial conductor disposed in the cavity, parallel to the longitudinal axis thereof, one or both ends of the coaxial conductor being in contact with a circular interior wall of the body, forming a coaxial resonant cavity; the coaxial conductor having a conductive protuberance opposite the plasma outlet hole and which extends radially into the cavity. It substantially reduces the erosion of the conductive materials.