225results about How to "Promote the development of miniaturization" patented technology

The invention provides an antenna assembly and a wireless communication device applied with the antenna assembly. The antenna assembly comprises a base board, a grounding face, a first radiation body and a second radiation body. The grounding face is arranged on the base board and is used for providing ground connection for the antenna assembly. The first radiation body is connected on the base board and is used for sending and receiving a radio signal with a first center frequency. The second radiation body forms a portion of a housing of the wireless communication device and is connected with the grounding face. The second radiation body is coupled with the first radiation body so as to send and receive a radio signal with a second center frequency together. The antenna assembly helps to reduce the dimension of an antenna and is benefit for the wireless communication device to be in miniaturization development.

The invention provides a thin-film transistor, which comprises a gate, a gate insulating layer, a channel layer, a source and a drain, wherein the gate comprises a first electrode layer, a piezoelectric layer and a second electrode layer; the first electrode layer is arranged corresponding to the channel layer to serve as a control electrode of the thin-film transistor; and the piezoelectric layer is arranged between the first electrode layer and the second electrode layer and can generate a corresponding pressure sensing signal according to a touch press operation of a sensed object. The invention further provides an ultrasonic sensor, an array substrate and a display device. Compared with the prior art, the thin-film transistor provided by the invention integrates a switching function, a pressure sensing function and an ultrasonic sensing function, and is diverse in function, simple in structure and beneficial to miniaturization development.

An electronic device comprises a camera and a screen. The camera is fixed into the screen. The screen includes a display panel used for displaying images, and the display panel includes a front surface facing users. The camera includes a lens element and an image converter, the lens element includes a lens and a mirror which forms an acute angle with the lens, and the lens is disposed on a side, away from the front surface, of the display panel. According to the electronic device provided by the invention, incoming light passes through the display panel and enters the lens, the mirror reflects the incoming light to the image converter, and the image converter generates a corresponding image according to the incoming light reflected to the image converter. Meanwhile, the camera is fixed between the display panel and a light emitting module, which is conducive to the miniaturization of the electronic device, helps to prevent the accumulation of dust or scratching of the lens element, and improves the video effect.

The invention belongs to the technical field of laser, and discloses a laser frequency stabilization system for a nuclear magnetic resonance gyroscope. The laser frequency stabilization system mainlycomprises a balance detector, a photoelectric detector, a laser frequency stabilization signal processing system and a nuclear magnetic resonance gyroscope basic system. A high-frequency small-amplitude modulation signal outputted by the laser frequency stabilization signal processing system is inputted into the injection current modulation port of the detection light laser; the a + port of the balance detector outputs a modulated optical detection signal and then feeds back and inputs the modulated optical detection signal to the laser frequency stabilization signal processing system, a PID feedback control signal is generated after the modulated optical detection signal is processed by the laser frequency stabilization signal processing system, and finally, the frequency of the detectionlight is locked at the extreme point of the spectral signal; the frequency stabilization method of the pump light is the same as the frequency stabilization method of the probe light, and the frequency of the pump light is locked at the extreme point of the spectral signal. The system is simple in design structure and easy to apply to the nuclear magnetic resonance gyroscope, and frequency stabilization of the pump light and the detection light can be realized only by utilizing the device conditions of the gyroscope system without externally building a frequency stabilization optical system.

The invention discloses a reflection cone and a sound box, and belongs to the technical field of sound boxes. The reflection surface of the reflection cone is a curved surface which is formed by the rotating of a part of a parabola around a fixed axis in one circle. The fixed axis passes through the focus of the parabola to be perpendicular to the symmetric axis of the parabola. A part of the parabola passes through one intersection of the fixed axis with the parabola and extends in a direction of leaving the top point of the parabola. The reflection surface of the reflection cone enables a sound wave to be reflected to propagate outwards in the peripheral direction of the reflection surface through the characteristics of the parabola when the sound source is located at the focus of the parabola, wherein the propagation directions of sound waves on any section of the reflection cone are parallel, so a listener has the consistent hearing sense in a 360-degree range. The distortion is small, and the sound quality is good. The sound box comprises the reflection cone and a loudspeaker, and the sound source of the loudspeaker is located at the focus of the parabola. A sound hole of the loudspeaker faces the reflection cone, and a reflection region cannot form a standing wave. The distortion is small, and the sound quality is good.

The invention provides an antenna unit, and the antenna unit comprises a radiation unit, an integrally-formed non-metal substrate and a metal reflector, wherein the non-metal substrate comprises a base plate and a separator plate, and the radiation unit and the separator plate are disposed on a top surface of the base plate. The top surface of the base plate is provided with a first metal layer, and the first metal layer is at least partially used to form a feed network circuit layer. At least one side surface of the separator plate is provided with a second metal layer which can enable the separator plate to serve as a radiation boundary, and the metal reflector is disposed on the bottom surface of the base plate. The antenna unit has good structural strength and consistency while achieving light weight and high integration, facilitates the improvement of the electrical performance of the antenna. The present invention also provides an antenna module including the above antenna unit and a large-scale array antenna.

The invention provides a wireless communication device comprising a metal shell, a substrate and a current feed-in part. The shell is provided with a first trench and a second trench communicated with each other. The current feed-in part is electrically connected with the substrate and used for acquiring current from the substrate. The shell is coupled to the current feed-in part, so that the first and second trenches can sense the current and trigger out corresponding resonant modes, and the wireless communication device can transmit and receive wireless signals having first and second center frequencies. The wireless communication device has the advantages that the metal shell is fully utilized as an antenna, transceiving efficiency of the antenna is improved effectively, and miniaturization development of the wireless communication device is benefited.

Antistatic graphite composite polyamide plastics with high heat radiation of the invention comprise the following components by weight: 20-40 wt% of graphite, 40-60 wt% of polyamide; 10-20 wt% of water-soluble silicate which is the combination of any one or two substances of lithium silicate and sodium silicate; 1-8 wt% of hexagonal boron nitride; 2-5 wt% of bismaleimide; 0.5-2 wt% of silane coupling agents; 0.25-1 wt% of antioxidant 168; 0.25-1 wt% of antioxidant 1010. During processing, water-soluble silicate is mixed with graphite powder; high-temperature copolymerization is performed by the mixture and polyamide; microchannels for heat radiation are formed and are used for cross ventilation; thus high heat-radiation radiation transfer effect is generated, and the plastics are providedwith good heat radiation performance.

The invention relates to the technical field of solid dead ring main units and discloses a solid dead ring main unit. The ring main unit comprises a cabinet body, cabinet doors, a door lock mechanism, a two-station mechanism, a three-station on-off operation mechanism and an embedded pole, wherein the embedded pole comprises an insulator, a two-station vacuum arc-extinguishing chamber, a three-station vacuum arc-extinguishing chamber, a first insulation draw bar and a second insulation draw bar. The ring main unit has the advantage of achieving full solid insulation of the embedded pole, and therefore full solid insulation of the solid dead ring main unit can be achieved and the solid insulation ring main unit can promote high-pressure switch equipment to develop towards miniaturization.

The invention discloses a base station antenna, an electric downward inclined transmission device and a switching mechanism. The switching mechanism comprises a mounting assembly, wherein the mountingassembly comprises a first mounting plate and a second mounting plate arranged at opposite intervals. A first transmission assembly includes a telescopic member and a drive member for driving the telescopic member to reciprocate in a preset linear direction; and a second transmission assembly including a first transmission shaft, a second transmission shaft for driving the input gear to rotate, and an abutment member. The switching mechanism can realize the meshing switching between the input gear and at least two output gears. The transmission device of the electric downward inclination adopts the switching mechanism, so that the electric downward inclination of at least two phase shifters can be adjusted by two motors, the mechanism of the transmission system is greatly simplified, andthe cost is saved; The base station antenna adopts the transmission device of the electric downward inclination angle, which greatly simplifies the mechanism of the transmission system and saves the cost.

The invention provides a chemiluminescence detector. The chemiluminescence detector comprises a reagent storage device, a reaction device, a dispensing device, a cleaning device and a measurement device; the reagent storage device is used for storing reagents; the reaction device is used for carrying reaction containers and performing sample addition, reagent addition and incubation operation; thereaction device comprises a reaction outer disk mechanism for carrying the reaction containers and performing reagent addition and mixing operation, and a reaction inner disk mechanism for carrying the reaction containers and performing incubation operation, wherein the reaction outer disk mechanism sleeves the outer side of the reaction inner disk mechanism, and the reaction outer disk mechanismand the reaction inner disk mechanism operate separately; the reagent storage device, the dispensing device, the cleaning device, and the measuring device are disposed around the reaction outer diskmechanism, in this way, operation on the reaction outer disk mechanism and the reaction inner disk mechanism can be performed simultaneously without interfering each other; and therefore, the detection speed of the chemiluminescence detector is improved, and detection efficiency is ensured. The invention also provides a detection method of the chemiluminescence detector.

The invention discloses a small-sized quick-assembling dual-polarized high isolation antenna, which comprises a reflecting surface, a feed source, a plastic supporting outer shell and a fixed base, and is characterized in that the reflecting surface comprises a primary paraboloidal reflecting surface and a secondary paraboloidal reflecting surface, the primary paraboloidal reflecting surface is composed of a plurality of paraboloid units, and the feed source comprises two groups of dipole antennas which are perpendicular to each other. Compared with the traditional reflecting surface integrated forming design, the die stamping size is reduced, the production cost is decreased, the paraboloid units are identical in shape and size, and the paraboloid units can be placed and packaged in a stacking manner, thereby reducing the packaging size and facilitating transportation; and the feed source comprises the two groups of dipole antennas which are perpendicular to each other, the signal transmitting/receiving capability is enhanced, the isolation between the antennas can be improved by adjusting the distance between the two groups of dipole antennas, and the anti-interference capability of the feed source is enhanced.

The invention provides a voice coil motor positioning device, comprising a fixed part, a movable part and a connecting part, wherein, the movable part is movably arranged on the fixed part; the connecting part is provided with a dielectric part; one end of the connecting part is connected with the fixed part and the other end thereof is connected with the movable part, wherein, the dielectric part can generate the deformation with the movement of the movable part, thus generating a movable part displacement signal further; by judging the movable part displacement signal generated when the dielectric part moves with the movement of the movable part, precise positioning of the voice coil motor can be realized.

The invention provides an antenna assembly comprising a substrate, a ground plane, a feed-in portion, and a radiation portion. The substrate comprises a top surface and a bottom surface arranged opposite to the top surface. The ground plane is disposed on the top surface and is used for connecting the antenna assembly with ground. The feed-in portion is disposed on the bottom surface and is partially extended to the ground plane. The radiation portion is formed by hollowing out the ground plane and is partially extended to an overlapped part of the feed-in portion and the ground plane so as to further form a slot antenna. The antenna assembly may widen the bandwidth of an antenna and is simultaneously convenient for a purpose of miniaturization development of wireless communication devices.

The invention relates to a variable-speed moving device of a main contact and an arc contact in an arc extinguishing chamber, belonging to the high-voltage switch manufacturing and designing field. The variable-speed moving device comprises guide rails and a main shaft. The guide rails are fixed in the arc extinguishing chamber; the main shaft is arranged in the arc extinguishing chamber; two short crank arms are fixed on two ends of the main shaft; two long connecting plates correspond to the two short crank arms; a long crank arm, a first short connecting rod, a second connecting rod and the arc contact are fixed in the middle of the main shaft, wherein the first short connecting rod, the second connecting rod and the arc contact are movably connected in sequence; the two short crank arms are movably connected to two sides of the main contact through the two long connecting plates which correspond to the two short crank arms; the arc contact penetrates the center of the main contact; the two long crank arms are movably connected to one end of the first short connecting rod; the other end of the first short connecting rod is movably connected with the second short connecting rod through a pin; the end part of the pin is provided with a roller; the guide rails extends to position between the two long connecting plates; and the roller runs along the guide rails.

The invention belongs to the technical field of keyboards and particularly relates to a photoelectric switch key and a keyboard. The photoelectric switch key comprises a shell, a circuit board, a photosensitive assembly and a pressing assembly, the photosensitive assembly is electrically connected with the circuit board, a shading part is arranged on the pressing assembly, and the pressing assembly is movably installed on the shell so that the shading part can move relative to a light receiving surface of the photosensitive assembly; when the shading part is far away from the light receiving surface of the photosensitive assembly, the photosensitive assembly can receive external light; when the pressing assembly is pressed, the shading piece gets close to and shades the light receiving face of the photosensitive assembly. When a user presses down the key, the shading piece completely shades light rays emitted to the photosensitive assembly from the light-transmitting area, the functionof the key is achieved, and the sensitivity of the key is effectively improved. And an infrared emission geminate transistor does not need to be additionally arranged to provide a light source, so that the structure is simpler and more compact, and key miniaturization development is facilitated.

The invention discloses an electric tuning control system, an electric tuning control device and an electric tuning control method of a multi-frequency antenna. The electric tuning control method of the multi-frequency antenna comprises the steps: an angle adjustment instruction is received, and whether a current gear is a target gear or not is judged; if the current gear is not the target gear, apower device starting instruction is sent, the rotating power output shaft of the power device is enabled to rotate in the first rotating direction and the current gear is adjusted to the target gear; and after the current gear is adjusted to the target gear, the rotating power output shaft of the power device is enabled to rotate by a preset number of turns in the direction opposite to the firstrotating direction. The antenna downward inclination angle of multiple frequency bands can be adjusted through one power device based on the electric tuning control method, the cost of the electric tuning control system can be reduced and miniaturization development of the antennas is facilitated.

The invention provides a wireless communication device working in a first radio frequency mode and a second radio frequency mode so as to receive and transmit a first-kind radio-frequency signal and a second-kind radio-frequency signal respectively, and the first-kind radio-frequency signal and the second-kind radio-frequency signal are basically the same in frequency. The wireless communication device comprises a controller, a first switch, a power amplifier and a second switch. The controller is used for transmitting a first voltage control signal to the power amplifier in the first radio frequency mode and transmitting a second voltage control signal to the power amplifier in the second radio frequency mode. The first switch is used for transmitting the first-kind radio-frequency signal and the second-kind radio-frequency signal to the power amplifier. The power amplifier is used for amplifying the first-kind radio-frequency signal according to the first voltage control signal and amplifying the second-kind radio-frequency signal according to the second voltage control signal. The power amplifier is further used for transmitting the amplified first-kind radio-frequency signal and the amplified second-kind radio-frequency signal to the second switch. By means of the wireless communication device, the design cost is reduced effectively.

The invention provides an antenna assembly which comprises a base plate, a ground plane, a feed-in portion, a first radiation portion, a second radiation portion and a third radiation portion. The ground plane is arranged on the top surface of the base plate, the antenna assembly can be grounded by the aid of the ground plane, the peripheral edge of the ground plane is hollowed out to form the first radiation portion, the second radiation portion and the third radiation portion respectively, the feed-in portion comprises a plurality of feed-in points, the feed-in points are respectively arranged on the first radiation portion, the second radiation portion and the third radiation portion, the first radiation portion is divided into a first radiation section and a second radiation section, the first radiation section is used for transmitting and receiving wireless signals in first frequency bands, the second radiation section is used for transmitting and receiving wireless signals in second frequency bands, the second radiation portion is used for transmitting and receiving wireless signals in third frequency bands, and the third radiation portion is used for transmitting and receiving wireless signals with fourth center frequencies, so that a plurality of slot antennas can be formed. The invention further provides a wireless communication device with the antenna assembly.