266results about How to "Small driving current" patented technology

The invention discloses an organic electroluminescence display device and a driving method thereof, and a display apparatus. In the OLED display device, in each pixel unit group, sub-pixel units for displaying white are located between two adjacent pixel units, and the area occupied by the sub-pixel unit for displaying white is greater than the area occupied by any sub-pixel unit in the pixel unit, so compared with an existing OLED display device, the area occupied by a single sub-pixel unit for displaying white is increased, and the aperture opening ratio of a single sub-pixel unit for displaying white can be increased, so that the driving current and power consumption of the sub-pixel units for displaying white can be reduced, and finally, the service life of the OLED display device can be prolonged; and the brightness of light emitted by the sub-pixel units for displaying white is used to replace the brightness of light emitted by one pixel unit of two adjacent pixel units according to a preset condition, so the overall display brightness of the OLED display device can be ensured in the display process.

The invention discloses a magnetic random access memory unit based on Rashba effect. The magnetic random access memory unit comprises a magnetic multilayer film memory unit and a bit-writing line. The magnetic random access memory unit is characterized in that the magnetic multilayer film memory unit comprises a substrate, a non-magnetic layer, a core functional layer zone and a covering layer from bottom to top; the core functional layer zone comprises a lower magnetic layer, a medium layer and a upper magnetic layer from bottom to top; the bit-writing line is connected with the non-magneticlayer so that write current flows through the non-magnetic layer transversely and the magnetic torque of the lower magnetic layer is reversed, thus writing data. The invention also provides a programmable magnetic logic device and spinning microwave oscillator with the similar structure based on Rashba effect. The invention realizes the separation of reading and writing, can effectively protect the device from damaging during high current density reading or writing and can effectively reduce the current density and increase the maneuverability of the device; and the invention also adopts the design scheme of closed geometry, thus further reducing the interference of magnetic field to the device.

The invention provides an array substrate. The array substrate comprises a substrate and signal wires, wherein the signal wires are arranged on the substrate; conductive parts, corresponding to the signal wires, are further arranged on the substrate; the signal wires are in parallel connection with the corresponding conductive parts; and the conductive parts corresponding to different signal wires are insulated and are spaced. Correspondingly, the invention further provides a display device. According to the array substrate and the display device provided by the invention, the resistance of the signal wires can be reduced; and thus, the display effect is improved.

The invention discloses a driving device and a driving method of a data line of a liquid crystal display. In the drive method, a polarity control module sets the polarity of voltage applied to both sides of sub-pixels, the corresponding polarity of a sub-pixel in which the difference of the gray-scale value of a current frame and the gray-scale value of an adjacent previous frame is smaller than or equal to a first preset value is set to be same with the polarity of the adjacent previous frame, and the corresponding polarity of a sub-pixel in which the difference of the gray-scale value of a current frame and the gray-scale value of an adjacent previous frame is greater than the first preset value is set to be opposite to the polarity of the adjacent previous frame; and a data driving module generates a voltage signal corresponding to the gray-scale value received by a receiving module according to the polarity set by the polarity control module, and the voltage signal is input into a data line. The method provided by the invention does not reverse the corresponding polarity of the sub-pixel in which the difference of the gray-scale value of the current frame and the gray-scale value of the adjacent previous frame is smaller than or equal to the first preset value, so that the drive current can be decreased, and further, the power consumption of a drive circuit is decreased.

A manufacturing method of a ring-shaped semiconductor device comprises steps of determining sizes of the inner diameter and the outer diameter of a ring-shaped semiconductor device to-be-formed, forming a semiconductor device layer on a semiconductor substrate, removing the semiconductor device layer within the size of the inner diameter to form a first opening, utilizing a first dielectric layer to fill the first opening and flattening the first dielectric layer, removing the semiconductor device layer beyond the size of the outer diameter and maintaining the semiconductor device layer between the inner diameter and the outer diameter, depositing a second dielectric layer and polishing the second dielectric layer until being at the same level with the semiconductor device layer, and finally forming the ring-shape semiconductor device. By firstly etching the inner diameter of the ring-shaped semiconductor device, filling with the first dielectric layer, removing the part beyond the outer diameter of the ring-shaped semiconductor device, depositing the second dielectric layer to fill, the ring-shape semiconductor device is formed, which can realize the purpose of reducing driving current and power consumption.

The invention discloses a pixel arrangement structure and a related device. The first sub-pixels are located at the center position of first virtual quadrangles and four vertex angle positions of thefirst virtual quadrangles; second sub-pixels are located at the center position of the sides of the first virtual quadrangles; third sub-pixels are located in second virtual quadrangles, and the foursecond virtual quadrangles form one first virtual quadrangle. In the second virtual quadrangles, the center distances between the third sub-pixels and the two first sub-pixels are equal; and / or, the center distances between the third sub-pixels and the two second sub-pixels are equal. Compared to a pixel arrangement structure in the prior art, the first sub-pixels, the second sub-pixels and the third sub-pixels can be tightly arranged in the same process condition to reduce the distances between the adjacent pixels as much as possible, so that the pixel opening area is increased in the condition of the same resolution, the drive current of the display device is reduced, and the life of the display device is prolonged.

PROBLEM TO BE SOLVED: To provide a pixel circuit which compensates change with time of a drain current in a drive transistor.SOLUTION: In a drive transistor Tr2, a gate G is connected to an input node A, a source S is connected to an output node B, and a drain is connected to a power supply voltage Vcc. A sampling transistor Tr1 is connected between the input node A and a signal line DL. A holding capacitance C1 is connected to the input node A. The sampling transistor Tr1 samples an input signal Vsig from the signal line DL and holds in the holding capacitance C1. The drive transistor Tr2 supplies a drive current Ids to a light emitting element EL in accordance with the signal voltage held by the holding capacitance C1. The pixel circuit is equipped with a compensation circuit 7 to compensate a decrease in the drive current Ids caused by changes in the drive transistor Tr2 with time. The compensation circuit 7 detects a decrease in the drive current Ids through the output node B side and feedbacks the detection result to the input node A side.

The invention provides a pixel unit driving circuit and method as well as a pixel unit. The pixel unit driving circuit comprises a driving thin film transistor, a first switching element, a storage capacitor, a driving control unit and a charging control unit; a grid electrode of the driving thin film transistor is connected with the first end of the storage capacitor, and is further connected with a drain electrode of the driving thin film transistor through the charging control unit; a source electrode of the driving thin film transistor is connected with an OLED (Organic Light Emitting Diode), and is connected with the second end of the storage capacitor through the driving control unit; the drain electrode of the driving thin film transistor is connected with a driving power supply through the first switching element; the second end of the storage capacitor Cs is connected with the driving power supply through the charging control unit; the driving control unit is connected with the driving power supply and the OLED respectively; and the charging control unit is connected with a data wire and the OLED respectively. With the adoption of the pixel unit driving circuit provided by the invention, critical voltage of the driving thin film transistor is compensated, and the fall of driving current, caused by boosting of critical voltage due to material aging of the OLED, can be compensated.

The invention relates to an LED (light emitting diode) projection lamp with a heat sink. The LED projection lamp with the heat sink comprises a front cover, a back cover, a light emitting unit, a heat dissipation part, a fan, a temperature detector and a control unit, wherein the heat dissipation part comprises a heat dissipation shell and fins; the fan is arranged in the back cover; the control unit can control the on and off of the fan according to the temperature of the light emitting unit. According to the heat sink arranged on the LED projection lamp disclosed by the invention, the heat dissipation effect of the projection lamp can be effectively improved, the service life of the projection lamp is prolonged, and the power consumption of the fan is saved.

The invention relates to an LED (Light-Emitting Diode) display screen and an LED screen brightness uniformity regulating method. The device is provided with a data processor, a row driving chip, a line driving chip, an LED display array, a power supply module VCOM (Virtual Computer) and a power supply end VDD (Virtual Device Driver); the data processor respectively outputs signals to the row driving chip and the line driving chip; the output end of the row driving chip is connected with rows of the LED display array; the output end of the line driving chip is connected with lines of the LED display array; the power supply module VCOM and the power supply end VDD are respectively connected with the LED display array; the LED display array is provided with a plurality of LED units; the data processor compares input voltage data with nmin, and when the LED monomers are in a low gray scale state, the duty ratio is regulated by a row scanning signal so as to realize brightness uniformity regulation under the condition that the LED units are in the low gray scale state. According to the method, display quality of the LED screen can be improved and the service life of the LED display screen can be prolonged in the high gray scale; brightness uniformity of the LED screen can be improved in the low gray scale.

The invention provides a backlight unit and a display device comprising the same. The backlight unit comprises a substrate, a wavelength conversion film and a miniature LED (light-emitting diode) chip array, the wavelength conversion film comprises a phosphor and is arranged on the substrate, the miniature LED chip array comprises a plurality of miniature LED chips, and the cross section area of each miniature LED chip is smaller than or equal to 1mm<2>. According to the backlight unit, the cross section area of miniature LED chip array is small, more LED chips can be arranged in the same substrate area, so that the brightness of a backlight component is high and uniformly dispersed, the miniature LED chip array is thin, secondary lens dispensing is omitted, the whole thickness of the direct-type backlight unit can be reduced, the miniature LED chips have lower driving current, less electric energy is converted into heat energy, energy is saved, less heat is generated, and the service life of the backlight unit can be prolonged.

A light emitting diode is provided, comprising: a substrate; a metal wiring layer disposed on the substrate; alight emitting element provided on the metal wiring layer; wherein the light emitting element comprises: a semiconductor light emitting layer having a first semiconductor layer, an active layer, and a second semiconductor layer formed from the substrate side sequentially; a transparent insulating layer provided on the substrate side of the semiconductor light emitting layer; a first electrode part and a second electrode part provided on the substrate side of the transparent insulating layer in such a manner as being separated from each other, and joined to the metal wiring layer; a first contact part provided so as to pass through the transparent insulating layer and electrically connecting the first electrode part and the first semiconductor layer; and a second contact part provided so as to pass through the transparent insulating layer, the first semiconductor layer, and the active layer, and electrically connecting the second electrode part and the second semiconductor layer.

The invention discloses a receiving end optical power control system used for fiber vibration sensing. A light emission port of a light source is connected with a light divider through a vibration sensing fiber. A second light division branch of the light divider is connected with an optical path of an optical detector. The optical detector converts light signal intensity into a light intensity simulation electric signal. An amplifier is used for amplifying the light intensity simulation electric signal. An analog-digital converter converts the amplified light intensity simulation electric signal into a digital signal used for representing light intensity. A threshold value judger is used for judging whether the digital signal used for representing light intensity is lower than a normal optical power threshold value, and if yes, an output number is amplified. An optical power adjuster is used for converting the adjusted number into a simulation signal. A driving circuit adjusts the driving current intensity of the light source according to the simulation signal so as to adjust the output optical power of the light source. According to the invention, the system is capable of acquiring relatively stable receiving optical power at the end of the optical detector in a low-cost resonant sensing system.

The embodiment of the invention discloses an array base board, a display panel and a display device. The invention relates to the display technical field. The array base board is characterized in that the display opening area of each pixel region comprises a multi-layer functional film, wherein the multi-layer functional film comprises a substrate, a buffer layer, a gate insulation layer, a first interlayer insulation layer, a planarization layer and an electrode film layer structure, and the buffer layer, the gate insulation layer, the first interlayer insulation layer, the planarization layer and the electrode film layer structure are sequentially formed along the direction away from the light-emitting side surface of the substrate; the electrode film layer structure comprises a pixel electrode, a public electrode and a first passivation layer which is arranged between the pixel electrode and the public electrode, and the refractive index of any layer of the multi-layer functional film is bigger than or equal to that of every layer of the functional film which is positioned between the layer of the multi-layer functional film and the substrate, and bigger than that of the substrate; the refractive index of every layer of the functional film increases gradually along the direction away from the substrate, and the transmittance of backlight light can be improved; therefore, a driving voltage or a driving current of a backlight module can be indirectly reduced, so can the power consumption.

The invention discloses an electromagnetic valve which comprises a valve seat, a valve core and a valve cover, wherein the valve core can be movably arranged in an inner cavity formed between the valve seat and the valve cover, at least one of the valve seat or the valve cover comprises magnetic materials, and at least one of the valve seat or the valve cover is provided with an electromagnetic coil; and the valve core uses magnetic materials. The electromagnetic valve provided by the invention uses an electromagnetic force to combine with a static magnetic force so as to reset the valve core, thus the avoiding the problems of mechanical failure and fatigue probably existing in the reset operation of the valve core by mechanical parts such as a spring and the like; meanwhile, the valve core can be driven by the combination of electromagnetic force and static magnetic force to move, the response speed of the electromagnetic valve can be promoted relative to the movement of the valve core driven by the mechanical parts such as the spring and the like; besides, aiming at the application of lower pressure in a loop, the electromagnetic force and static magnetic force can be reasonablyconfigured on a basis of material and electromagnetic valve structure optimization, thus the drive current of the electromagnetic valve can be reduced and then the power consumption of the electromagnetic valve can be reduced; by designing a reasonable fluid pathway, the volume of the electromagnetic valve is far less than that of the electromagnetic valve of the same kind.

The invention provides a display panel and a display device. The display panel comprises a plurality of light emitting units arranged on an array substrate, wherein each light emitting unit comprisesa first electrode layer, a light-emitting layer and a second electrode layer which are stacked in sequence; and each light-emitting layer comprises a red sub-pixel layer, a green sub-pixel layer and ablue sub-pixel layer, wherein a blue pixel layer is arranged on the light emitting side of the light emitting layer, and the blue pixel layer and the blue sub-pixel layer are overlapped in the lightemitting direction. By virtue of the display panel provided by the invention, the service life of the blue sub-pixel layer is prolonged, so that the technical problem that the service life of the display panel is shortened due to the fact that the service life of the blue organic light-emitting material is shortened caused by high current in an existing display screen is solved.

The invention relates to an automatic calibration method and device for printing of a patient monitor. The patient monitor printing method comprises the following steps of: detecting working state information of a printer, and acquiring the state information; determining the working state of the printer according to the working state information; sending out a sensing signal when the working state is idle, and sensing location mark information which is preset on printing paper to acquire the position information of the printing paper; determining whether the printing is deviated or not according to the acquired position information of the printing paper; regulating positions of a start point and an end point of a printing baseline when the printing is deviated; and printing monitor data when the printing baseline is regulated and the printing is not deviated. According to the automatic calibration method and device for printing of the patient monitor, the problem that errors exist between screen displayed data and printed data is solved, the printing drive current is reduced, and the service life of a thermal printing head is prolonged.

The invention discloses a closed-loop control circuit for a power switching device and a method. The closed-loop control circuit comprises a voltage differential circuit, a comparator circuit, a delay circuit and a current driving circuit, wherein the first input end of the comparator circuit is connected with the output end of the voltage differential circuit; the second input end of the comparator circuit is used for being connected with reference voltage; the input end of the delay circuit is connected with the output end of the comparator circuit; the first input end of the current driving circuit is connected with the output end of the delay circuit; the second input end of the current driving circuit receives PWM signals; and the output end of the current driving circuit is connected with the control end of the power switching device. A voltage change rate dv / dt signal is detected through the differential circuit, when the dv / dt signal is larger than the reference voltage, the current driving circuit is controlled, instantaneous current is provided, gate driving current is reduced, and the voltage overshoot is maintained to be unchanged basically. The driving circuit can be accurately controlled to output voltage and current, the turn-off speed is quickened, and the turn-off loss is reduced.

The invention discloses an independent grid-controlled nano line field effect transistor which comprises an inner grid electrode, an outer grid electrode, inner and outer grid dielectric layers, a channel region, a source region and a drain region, wherein the inner grid electrode is positioned at the center of the whole device structure; and the inner grid dielectric, the channel region, the outer dielectric and the outer grid electrode are coaxially arranged from inside to outside to completely enclose the inner-layer region. The arrangement of the inner grid electrode can enable the nano line device to work under the condition of independent grid control so as to provide a selection scheme for the design of a low power consumption circuit, and the threshold voltage is more sensitive to the adjustment of the controlled electrode. When the device works under the common grid condition, the electrical performance of the device is superior to that of the conventional nano circular grid device and double grid device. For a silicon film thickness of 10nm, the independent grid-controlled nano line transistor device can shorten the grid length to 20nm.

The invention relates to an or gate based on magnetic Skyrmion and a control method thereof. The or gate comprises a magnetic nano-track, wherein the magnetic nano-track comprises a magnetic layer and a strong spin track coupling layer which are in mutual contact connection, and the magnetic layer comprises a first input end, a second input end, a Y-shaped magnetic rail and an output end. The Y-shaped magnetic rail comprises a first magnetic track, a second magnetic track, a third magnetic track and a fourth magnetic track. The magnetic Skyrmion enters the Y-shaped magnetic rail from the first input end and / or the second input end, then is changed into a magnetic domain wall pair, passes through the Y-shaped magnetic rail, and then is restored into the new magnetic Skyrmion. The new magnetic Skyrmion and enters the output end. The narrow magnetic rail width in the Y-shaped magnetic rail is smaller than the diameter of the magnetic Skyrmion. The magnetic rail width of the third magnetic rail is greater than the diameter of the magnetic Skyrmion. Reversible conversion can be realized between the magnetic Skyrmion and the magnetic domain wall pair. The or gate formed through movement of the magnetic Skyrmion in the magnetic nano-track is characterized by small size, low power consumption and high stability.

The present invention discloses a giant magnetostrictive micro displacement drive device based on the principle of temperature control by phase change water cooling. The current is used for controlling the drive device to output the displacement and through the coordination of the phase change temperature control device and the water cooling circulating device, the inside heat of the drive is brought to the outside environment to suppress the temperature increasing of the drive and heat output error to improve the control precision of the displacement output. The drive of the invention has the advantages of simple structure, relatively small drive current, stable operation and good frequency response, and combines the advantages of the phase change temperature technique and water cooling temperature control technique to perform long-time temperature control and suppress the heat output error effectively, without establishing a complex mathematical model. Consequently, the control precision of the displacement output can reach the micron grade or higher and the device can adapt to various poor working conditions. At the same time, the device has the advantages of small volume, light weight, large output force and highly precise displacement, can suppress the influence of the thermal deformation on the output displacement of the drive and can be used in the fields of ultraprecise machining and vibration control.

The invention discloses a novel common rail injector. The novel common rail injector comprises an injector part, an electromagnetic valve part and an injection nozzle part. The electromagnetic valve part and the injection nozzle part are installed at the upper end and the lower end of the injector part correspondingly. The mode combining the two-position three-way electromagnetic valve control part with the injection nozzle part with adjustable starting pressure is adopted, the structure is simple, and the injection initial point and injection amount can be flexibly controlled. A control valve element and an armature lever are of a fuel pressure self-balancing structure, the injection starting response speed can be remarkably increased, and the drive current of an electromagnet can be lowered, so that the service life of the electromagnet is effectively prolonged, and the reliability of the electromagnet is effectively improved. Return oil throttling holes are formed in an adjusting shim, return oil can be effectively controlled, and the return oil amount is reduced. Return oil grooves are formed between valve bodies, and the leakproofness can be remarkably improved. Pressure control chamber structures, oil outlet throttling hole control ball valves and control piston matching part pairs of traditional common rail injectors are omitted, the parts are easy to manufacture, the manufacturing difficulty is low, and the process cost is low.

The invention provides a method for controlling a flash lamp of a mobile terminal and a mobile terminal. A first flash lamp is arranged on the mobile terminal, and the method includes judging whether the first flash lamp is damaged when a flashlight opening instruction is detected; switching on the first flash lamp as a flashlight when the first flash lamp is not damaged; detecting whether the temperature of the first flash lamp exceeds a preset threshold value at preset time intervals; and reducing driving current of the first flash lamp according to a preset step length when the temperature of the first flash lamp exceeds the preset threshold value. Thus, the method for controlling the flash lamp of the mobile terminal can monitor whether the temperature of the flash lamp exceeds the preset threshold value in real time after the flash lamp is switched on as a flashlight, thereby flexibly adjusting the driving current, solving the problem that after the flashlight is used for a long time, the flash lamp is damaged due to too high temperature, and improving usage experience of a user.

Disclosed is a dual clutch transmission wherein, during a pre-shifting operation wherein, when a vehicle is driven using either a first or a second drive force transmission path extending from first and second input shafts (12, 13) to an output shaft (14), a synchronizer (S1, S2) of the other drive force transmission path is operated, the drive force of an internal combustion engine (E) is changed by a command from an electronic control unit (U), and accordingly, even when a drive force or a braking force is generated by inertia, due to a change in the number of rotations of the first and second input shafts (12, 13) in conjunction with the pre-shifting operation, the drive force or the braking force generated by inertia can be compensated by a change in the drive force of the internal combustion engine (E), to reduce shift-shock. Furthermore, the shift-shock can be reduced by only changing the drive force of the internal combustion engine (E) without adding any special structures to the dual clutch transmission (T), and accordingly, the cost and size of the dual clutch transmission (T) can be prevented from increasing.

An organic electroluminescent device comprises a substrate, an anode, a first organic electroluminescent layer, a charge generating layer, a second organic electroluminescent layer and a cathode. The charge generating layer comprises a metal layer, a molybdenum oxide layer and a gold layer which are arranged on the first organic electroluminescent layer in a laminating mode. The metal layer is made of magnesium, aluminum, neodymium, samarium or ytterbium. The organic electroluminescent device is in a laminating structure; the charge generating layer is sequentially connected with the first organic electroluminescent layer and the second organic electroluminescent layer; and the charge generating layer comprises the metal layer, the molybdenum oxide layer and the gold layer which are arranged on the first organic electroluminescent layer in a laminating mode, so that the charge generating layer has the advantages of being high-efficiency in the charge generating property and rapid in the charge transmission property, generating more hole-electron luminous pairs, improving the luminous efficiency of the organic electroluminescent, increasing the current efficiency of the organic electroluminescent device in a multiplied mode along the number of luminous units which are in serious connection and being low in the driving current and high in the luminous efficiency.

The present invention discloses a method for reducing gradient coil eddy current in magnetic resonance image-forming system. Said invention utilizes the method of reducing diameter of Z gradient coil to reduce the eddy current produced by gradient coil and adopts the mode of changing Z gradient coil winding to ensure that the image-forming space is not changed. Said invention also provides the concrete requirements for reducing Z gradient coil diameter, and said method can effectively reduce the eddy current produced by gradient coil.

The invention relates to a linear polarization laser output high-power optical fiber amplifier and an output control method. The optical fiber amplifier comprises an optoisolator, a pumping beam combiner, a double-clad active optical fiber, an optical fiber collimator, a polarizer, a pumping laser and a pumping laser drive control circuit. The polarizer is provided with a main polarization shaft output end and an auxiliary polarization shaft output end. A microprocessor of the pumping laser drive control circuit is connected with a pumping drive circuit, the pumping drive circuit is connected with the pumping laser, a photoelectric detector connected to the auxiliary polarization shaft output port and a current detector for monitoring a pumping drive current are connected with the microprocessor. The control method includes the steps that a total power-current function P (I) and insertion loss of a main polarization shaft and an auxiliary polarization shaft are firstly obtained and stored; auxiliary polarization shaft output power is obtained through the photoelectric detector, when a polarization state changes, the pumping drive current is calculated, amplifier output total power is adjusted, constant output of laser power of the main polarization shaft is achieved without influence of environmental factors. Moreover, a luminous power beam splitting device is not needed, feedback control is achieved, and cost is reduced.

The invention discloses a resonant frequency tracking circuit of a piezoelectric ceramic transformer. The resonant frequency tracking circuit comprises piezoelectric ceramics, a current switch, a sampling circuit and a phase-locked loop circuit. The piezoelectric ceramics is connected with one end of a resonance inductor, the current switch is connected with the other end of the resonance inductor and is used for converting direct-current voltage input by a power supply into high-frequency pulse current, the sampling circuit is used for sampling input signals or output signals by the piezoelectric ceramics, the phase-locked loop circuit is connected with an output end of the sampling circuit and is used for correcting the sampled signals and outputting the corrected signals as feedback signals to the current switch to control pulse current frequency output by the current switch. The problem that transmission efficiency is lowered since resonant frequency of the piezoelectric ceramic transformer changes along with operation temperature and output load is eliminated and phase of drive frequency can be locked between 105 degrees to 110 degrees by the resonant frequency tracking circuit of the piezoelectric ceramic transformer, and the piezoelectric ceramic transformer is protected from being damaged.