53results about How to "No need to increase the area" patented technology

The invention provides a Sigma-Delta modulator and an analog / digital converter. The Sigma-Delta modulator comprises a quantizer, a correction module and an RC integrator, wherein the correction module comprises a preset resistor, and correction level is generated through the preset resistor; the correction module is used for comparing the correction level with the preset reference voltage by utilizing a comparator in the quantizer, so that a digital correction signal is generated, and the resistor in a resistor correction array of the RC integrator is corrected according to the digital correction signal; and the preset resistor has the same type as the resistor in the resistor correction array of the RC integrator. According to the Sigma-Delta modulator, the resistance tolerance in the RC integrator can be corrected.

The invention discloses a method for manufacturing an ESD gate grounded NMOS transistor. Through photoetching, the drain end and the edge of the grid electrode of the ESD transistor are in certain distance; a region (a drift region) between the drain end and the grid electrode is only provided with a lightly-doped source drain (LDD) region and no high-dosage drain adulteration; as square resistance of the LDD region is much larger relative to the high doped drain end, the method can ensure that larger series resistance is obtained under the condition of shorter length of the drift region without increasing area occupied by the transistor, thereby saving the area of the transistor; moreover, as the breakdown voltage of an LDD junction is lower than the drain end, the transistor decides the trigger voltage through the LDD junction, well achieves the aim of reducing the trigger voltage, does not need any extra ESD photoetching and ESD ion injection, thereby simplifying a process and saving cost.

The invention relates to a circuit for trimming a band-gap reference. The circuit comprises a plurality of first trimming resistors, a plurality of first laser fuse wires, a plurality of third trimming resistors and a plurality of third laser fuse wires. The invention further comprises a method for trimming the band-gap reference. The circuit and method for trimming the band-gap reference are adopted, it is ensured that the absolute value output consistency of a reference voltage is improved, the cost of a potentiometer when a customer produces and the cost of manual calibration are saved, andat the same time, the production efficiency is improved; the absolute value of the reference voltage can be regulated either positively or negatively, at the same time, the temperature coefficient ofthe reference voltage can be adjusted bidirectionally; the problem is solved that the discreteness of the digital multimeter chip itself is invalid due to the reference voltage influenced by the process, and the yield rate is improved; the size and the cost of the chip are almost unaffected, and the circuit and method for trimming the band-gap reference has a wide application range.

The object of the invention is to reduce the writing and erasing voltages of a memory transistor without increasing the area of a memory cell, and to reduce the area of a memory cell without increasing the writing and erasing voltages. The memory cell includes a memory transistor having a first island-shaped semiconductor region, a floating gate and a control gate. In addition, a second island-shaped semiconductor region is formed under the floating gate with an insulating film interposed therebetween. Since the second island-shaped semiconductor region is electrically connected to the control gate, a capacitance is formed between the second island-shaped semiconductor region and the floating gate. This capacitance contributes to an increase in the coupling ratio of the memory transistor,which makes it possible to increase the coupling ratio without increasing the area of the memory cell. Furthermore, the area of the memory cell can be reduced without reducing the coupling ratio.

The invention provides a display substrate. The display substrate includes a display area. The display area includes a plurality of pixel units. The display substrate further includes at least one antenna. The antenna is disposed at a boundary of the pixel units. At least one antenna is used to transmit a detection wave to the outside after receiving a drive signal. At least one antenna is used togenerate an inductive signal after receiving an inductive wave from the outside. The invention also provides a display device and an operation method of the display device. In the display substrate,the antenna cannot occupy a peripheral area, and realization of frame narrowing of the display device is facilitated.

The invention discloses a modulation type piezoelectric loudspeaker, a loudspeaker system and a control method thereof and relates to the technical field of loudspeakers. The modulation type piezoelectric loudspeaker comprises a casing, a sound production piezoelectric piece, a sound production vibrating diaphragm and a piezoelectric valve, wherein the sound production piezoelectric piece and the sound production vibrating diaphragm are combined together. The sound production piezoelectric piece is used for driving the sound production vibrating diaphragm to generate oscillation air flow under the driving of audio driving electrical signals; and the piezoelectric valve is used for moving under the driving of control driving electrical signals so as to open or seal an air outlet of oscillating air flow or adjust the opening degree of the air outlet. The loudspeaker system and the loudspeaker system control method are provided. According to the modulation type piezoelectric loudspeaker, the opening and closing of the air outlet of the oscillating air flow generated by the sound production vibrating diaphragm and the size of the air outlet are controlled through the opening and closing of the piezoelectric valve, so that frequency of sound signals output by the loudspeaker is changed, high-fidelity replayed sounds are obtained while enough output air flow quantity is guaranteed, the structure is simple and reliable, the area of the piezoelectric piece does not need to be increased, and miniaturization is achieved easily.

The invention provides a reheater system for a waste incineration boiler. The reheater system aims at solving the problems. Due to the fact that a high-temperature reheater and a low-temperature reheater are additionally arranged and the high-temperature reheater and the low-temperature reheater are separately arranged, to improve the smoke environment where the high-temperature reheater is located and reduce high-temperature corrosion, the high-temperature reheater is arranged behind a horizontal flue third-stage superheater and in front of a second-stage superheater. To reduce the total length of the boiler, the low-temperature reheater is arranged in a third vertical flue, so that it can be guaranteed that the main steam temperature of the waste heat boiler is increased to 450 DEG C to480 DEG C, the reheating steam temperature reaches 400-450 DEG C, the safety and reliability of the reheaters can be improved, the heat exchange efficiency of the boiler is improved, no excess superheater area needs to be increased, the investment cost and the occupied area of the boiler are lowered, and the problems existing in the prior art can be solved effectively.

The invention provides a display panel and a fabrication method. The fabrication method of the display panel comprises the following steps of substrate arrangement, photoresist preparation, protectionlayer fabrication, first inorganic layer fabrication, organic layer fabrication and second inorganic layer fabrication and also comprises the step of photoresist removal before or after the first inorganic layer fabrication, and the step of photoresist removal is used for removing photoresist in a through hole and a negative electrode layer and the protection layer on the photoresist. The fabrication method has the technical effects that laser cutting is not needed, the technical problem of particle adhesion caused by laser cutting is prevented, moreover, a crack-prevention structure is not needed to be arranged, the screen-to-body ratio of the display panel is improved, the performance of water and oxygen blocking of the display panel is improved, the package effect of a package film layer is improved, and the service lifetime of the display panel is prolonged.

The invention relates to a wide-angle lighting solar energy photovoltaic cell which is formed by assembling a full transparent upper cover, a silicon solar cell, a lower bottom plate and the like, wherein the full transparent upper cover on the silicon solar cell is or covered with full transparent mutually parallel cylindrical wide-angle lenses and spherical grid wide-angle lenses. The visual angle of the cylindrical wide-angle lenses or the spherical grid wide-angle lenses is 90 degrees-135 degrees. The wide-angle lighting solar energy photovoltaic cell can absorb sunlight to the maximum extent without rotating a solar panel in the whole day from sunrise to sunset under the situation of fixing the solar panel, be always in the state with the maximum conversion rate and improve the power by about 20%. The structure is simple, and a panel of an upper cover plate does not need to be increased, thereby realizing very low using cost, improving the efficiency and being greatly conductive to popularization of the silicon solar cell.

The present invention discloses a surface acoustic wave resonator type vibration sensor and a surface acoustic wave resonator type vibration detection system. The surface acoustic wave resonator type vibration sensor comprises a first antenna, a matching network, a reflecting grating and an interdigital transducer. The reflecting grating and the interdigital transducer are arranged on a piezoelectric substrate; the matching network includes an optimum matching network consisting of at least one capacitor and at least one inductor; and the optimum matching network is connected in parallel with an acceleration detection circuit, the acceleration detection circuit includes a plurality of branches which are in parallel connection, and the number of branches merged into the optimum matching network is different at different accelerated speeds. Through arrangement of an acceleration detection circuit in a matching circuit, the surface acoustic wave resonator type vibration sensor provided by the invention is simple in circuit structure and small in space usage, and does not have to increase the area of a piezoelectric substrate so that the cost may be saved.

The invention provides an OLED display device, a power-on transmission method for compensation data and an image display method. A display compensation value random access memory and a display compensation logic unit in a driving chip are arranged at an electronic client; the electronic client is electrically connected with the display compensation value random access memory, so that all structures communicate with one another. In the power-on non-display stage, compensation data is stored in the display compensation value random access memory of the electronic client and images are compensated through the display compensation logic unit of the electronic client. As the display compensation value random access memory and the display compensation logic unit are arranged at the electronic client, the area of the driving chip is not occupied, the area of the driving chip does not need to be increased, and the problem of distortion does not exist; different frame frequencies do not need tobe switched by erasing original data, black screen time does not exist, the image display effect is better, and the user experience is good; compensation data corresponding to different frame frequencies are directly called, so that the compensation accuracy can be ensured, and the compensation effect is better.

The invention discloses a distributed surface acoustic wave resonator and a surface acoustic wave sensing system. The distributed surface acoustic wave resonator comprises a first antenna, a matching network, a reflecting grating and an interdigital transducer, wherein at least the reflecting grating and the interdigital transducer are arranged on a piezoelectric substrate; the matching network comprises an optimal matching network composed of at least one capacitor and at least one inductor, and the optimal matching network is further connected with a switch circuit in parallel; the switch circuit comprises a plurality of branches connected in parallel, each branch is provided with at least one capacitor and / or inductor device, and each branch of the switch circuit is further provided with a switch for controlling on-off state of the branch. According to the distributed surface acoustic wave resonator provided by the invention, when the matching network is connected with different branch, correspondingly, the resonator is corresponding to one center frequency, and the center frequency of the resonator can be changed just by changing the connected branch under control; and the distributed surface acoustic wave resonator has simple structure, and occupies small space.

The invention relates to an active area structure. An active area is a second type active area in a semiconductor substrate; the surface of the second type active area is covered with a gate oxide layer; the gate oxide layer is provided with a source selecting gate corresponding to the position of the second type active area; the second type active area also comprises an insulator well area; and the insulator well area corresponds to the position of an interconnecting structure for connecting the source selecting gate. By arranging the insulator well area at the position of the interconnectingstructure corresponding to the source selecting gate in the second type active area, the active area structure can effectively increase resistance between the source selecting gate and the second type active area under the source selecting gate and improve the insulated isolation performance between the both, thereby solving the problem of big leakage current between the source selecting gate andthe active area caused by the damage of the gate oxide layer under the interconnecting structure of the source selecting gate, reducing the power consumption of a NAND device, and improving the stability of the device.

The invention discloses a method for verifying whether a detection result of a detecting device is right, which relates to the detecting technology of semiconductors. The method comprises a clip which is equipped with a work area and a nominal area, the clip comprises a plurality of bit lines and word lines, the nominal area does not participate in a circuit work of the work area, and the bit lines or the word lines of the nominal area are connected with fuse wires and are connected with preinstall bit lines or word line circuits of the work area. The preinstall bit lines or the word lines of the work area fail through that the fuse wires are interrupted, the bit lines or the word lines of the nominal area which are connected with the fuse wires replace the preinstall bit lines or preinstall word lines of the work area, thereby obtaining an invalid practical physical address. The clip is detected by the detecting device, thereby outputting a detected physical address, and whether the detecting device is natural can be detected through comparing the practical physical address and the detected physical address. Compared with the prior art, the fuse wires are bigger and are conveniently interrupted by focusing ions or lasers. The design of a fuse wire circuit is added in the nominal area, and the whole area of the clip does not need to be increased.

The invention provides a capacitive MEMS gyroscope and a method for accelerating oscillation starting speed thereof. The capacitive MEMS gyroscope comprises a substrate, a movable mass block, a directcurrent signal end, a ground wire, a first switch, a second switch and a third switch; the direct current signal end is electrically connected with the movable mass block through the first switch; the direct current signal end is electrically connected with the substrate through the second switch; the direct current signal end is electrically connected with the ground wire through the second switch and the third switch in sequence; and the substrate is electrically connected with the ground wire through the third switch.

The invention relates to the technical field of semiconductors, and particularly discloses a transient voltage suppression protection device with high maintaining voltage, which comprises a first conductive type substrate; a second conductive type well; a low-voltage second conductive type well and a low-voltage first conductive type well; a first N + region and a first P + region; a second N + region and a second P + region; the first P + region is close to the second N + region; a groove is formed in the junction position of the low-voltage second conductive type well and the low-voltage first conductive type well, a third N + region is arranged in the groove, and the groove is divided into at least two parts by the third N + region; the first N + region and the first P + region are connected to form an anode metal end of the transient voltage suppression protection device; and the second N + region and the second P + region are connected to form a cathode metal end of the transient voltage suppression protection device. The invention further discloses an electrostatic discharge circuit structure. According to the transient voltage suppression protection device with the high maintaining voltage, the maintaining voltage can be increased under the condition that the area of the device is not increased.

The invention discloses a linkage laminated injection mold which comprises a middle cavity mold plate (1), a left core mold plate (2) and a right core mold plate (3), wherein the adopted left and right core mold plates are respectively positioned on the left and right sides of the middle cavity mold plate; the middle cavity mold plate is provided with an A cavity carrier plate, a B cavity carrier plate and a heat flow carrier plate; two mold cavities are formed in each of the A cavity carrier plate and the B cavity carrier plate; the heat flow carrier plate is provided with a head flow distributing channel, a sliding hot sprue and linkage gears; the left core mold plate is provided with a left rack, a left top plate, a left ejector oil cylinder, a left guide column, a left mold core, a left bottom plate and a left carrier plate; and the right core mold plate is provided with a right rack, a right top plate, a right ejector oil cylinder, a right guide column, a right mold core, a sprue hole, a right bottom plate and a right carrier plate. According to the linkage laminated injection mold, a laminated structure that two parting surfaces are arranged on the left and right sides of the middle cavity mold plate is adopted, and a technical scheme that four products can be simultaneously produced by adopting one mold through linkage opening-closing of the left rack, the right rack and the linkage gears, thereby achieving the injection molding production of auto airbag side cover products, and fulfilling the purposes of cost reduction and efficiency improvement.

The invention discloses an image coding and decoding method and a codec, and the coding method comprises the steps: dividing a to-be-processed image into a plurality of coding blocks, and obtaining the pixel depth of the to-be-processed image; preprocessing the pixel data in the coding block, splitting the processed pixel data into pixel sub-data of a plurality of units, and enabling the pixel sub-data of each unit to comprise a binary number with a preset bit number; calculating a prediction residual error of a pixel in the coding block to obtain a residual error image of the coding block; and selecting an encoding mode with the shortest code stream to encode the residual image. In this way, the codec can process images with different pixel depths in a compatible mode.

The invention discloses a heat dissipation device for a hydraulic system. The heat dissipation device comprises a water-cooled engine water tank heat dissipation device and the hydraulic system, wherein the hydraulic system is externally connected with a circulating oil pipe, the circulating oil pipe is arranged in the water-cooled engine water tank heat dissipation device, a cavity is arranged above the water-cooled engine water tank heat dissipation device, the hydraulic system and end parts, which are connected with two ends of the hydraulic system, of the circulating oil pipe are both located in the cavity, and the circulating oil pipe is arranged in the water-cooled engine water tank heat dissipation device and is of a helical structure. According to the heat dissipation device for the hydraulic system, disclosed by the invention, the circulating oil pipe is set to be a helical shape, thus the time that the circulating oil pipe passes through the water-cooled engine water tank heat dissipation device is increased, the heat dissipation effect of the hydraulic system is greatly increased, the cavity is arranged above the water-cooled engine water tank heat dissipation device and is used for placing the hydraulic system, the whole heat dissipation device is simpler, the area of the hydraulic system does not need to be increased, the cost is correspondingly reduced, meanwhile, the temperature of the water-cooled engine water tank heat dissipation device can be instantaneously reduced by the design of a refrigeration layer, and the heat dissipation effect is further increased.

The invention provides a pixel driving circuit, a driving method thereof and a display device. The circuit comprises a first switch circuit, a second switch circuit, a third switch circuit, a pull-down switch circuit, a driving switch circuit, a first capacitor and a second capacitor, the first capacitor and the second capacitor are coupled. Voltage of the control end of the driving switch circuitis pulled up twice on the basis of a high-level signal. The control end of the driving switch circuit obtains sufficient driving voltage; and the first end and the second end of the driving switch circuit are controlled to be conducted, so that the signal output end outputs a high-level signal, the problem of abnormal picture display caused by insufficient driving voltage of the driving switch circuit can be avoided, the area of the TFT panel does not need to be increased, and the driving circuit is suitable for a narrow-bezel display screen.

The present invention provides a display panel and a preparation method thereof. The preparation method of the display panel includes the following steps: a substrate setting step, a photoresist preparation step, a protective layer preparation step, a first inorganic layer preparation step, an organic layer preparation step and a second The second inorganic layer preparation step, before or after the first inorganic layer preparation step, further includes a photoresist removal step for removing the photoresist in the through hole and the cathode layer and protective layer thereon. The technical effect of the present invention is that it does not need to use laser cutting, avoids the technical problem of particle adhesion caused by laser cutting, and does not need to install an anti-crack structure to increase the screen ratio of the display panel. Enhance the performance of the display panel to block water and oxygen, improve the packaging effect of the packaging film layer, and prolong the service life of the display panel.

The invention discloses a double-working medium indirect air cooling system and a control method thereof, and belongs to the field of indirect air cooling systems of thermal power plant host machinesor auxiliary machines. The double-working medium indirect air cooling system is characterized in that a pump is arranged on a water outlet pipe of a desalted water storage tank, a pump is arranged ona water outlet pipe of an anti-freezing solution water storage tank, the water outlet pipe of the desalted water storage tank is connected with the down stream of a water inlet pipeline of working equipment, the water outlet pipe of the anti-freezing solution water storage tank is connected with the upper stream of the water inlet pipeline of the working equipment, and a switching valve is arranged between the down stream and upper stream of the water inlet pipeline of the anti-freezing solution water storage tank; a water outlet pipeline of the working equipment is connected with a water inlet pipeline of a radiator, a first water outlet pipeline of the radiator is connected with the water inlet pipeline of the working equipment, a second water outlet pipeline of the radiator is connectedwith a water return pipeline of the desalted water storage tank and a water return pipeline of the anti-freezing solution water storage tank, a water return valve is arranged on a water return pipeline of the desalted water storage tank, and a water return valve is arranged on the anti-freezing solution water storage tank; and each pipeline is provided with one valve. According to the double-working medium indirect air cooling system and the control method thereof, the anti-freezing effect during severe cold weather and the cooling effect during scorching hot weather can be met.

The invention discloses an amplifier capable of increasing bandwidth by injecting current and a method thereof. The amplifier comprises an output terminal for receiving a first input signal; a load terminal coupled with the input terminal and used for outputting the first input signal; a preserved current source coupled with the input terminal and used for allowing the circulating of a fixed current; and a first current source coupled with the input terminal and used for injecting the first current into the input terminal and outputting the first output signal.

The invention relates to ultrasonic equipment, a control method of the ultrasonic equipment, and a storage medium, and belongs to the technical field of electronics. The ultrasonic equipment comprises: a direct current-to-direct current conversion circuit comprising a conversion controller; an electronic circuit connected with the output end of the direct current-to-direct current conversion circuit; and a frequency controller connected with the conversion controller, wherein the frequency controller is used for determining the working frequency of the conversion controller in the current timeperiod according to a preset frequency adjustment rule in the process of generating the ultrasonic image, and controlling the conversion controller to work according to the working frequency when theworking frequency in the current time period is different from the working frequency in at least one other time period. The problem of ultrasonic image abnormality caused by switching noise of the direct current-direct current conversion circuit can be solved; and by adjusting the working frequency of the clock source signal of the conversion controller, strong noise originally at a fixed frequency can be uniformly distributed in an observable spectrum range of an ultrasonic image, so that the abnormality of the ultrasonic image is eliminated.