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1337results about How to "Reduce layout area" patented technology

Low-voltage difference linear constant voltage regulator with novel structure

InactiveCN101419479AFeedback structure is omittedThe output voltage is accurate and stableElectric variable regulationCushionOperational transconductance amplifier
The invention relates to a low dropout linear regulator with a novel structure, which comprises an error amplifier, a driving component, a cushion circuit, a driving component biasing circuit for providing static current for the driving component, and a compensating circuit, wherein the error amplifier adopts a rail-to-rail folding common-source common-mesh operation transconductance amplifier structure, and the cushion circuit comprises a source follower circuit device and a conversion rate intensifier circuit. The regulator adopts the full feedback structure and the driving component biasing circuit to replace a resistor potential-divider network, saves the area of a domain, reduces the power consumption of the system, improves the precision and the stability of output voltage, and reduces the nonlinear distortion, and the like of the system; the error amplifier adopts a rail-to-rail folding common-source common-mesh operation transconductance amplifier structure, and realizes the rail to rail of input and output voltage; the conversion rate intensifier circuit increases the conversion rate of the system; the source follower circuit device and the compensating circuit change the position displacement of zero poles of the system, improves phase margin, and improves the stability of the system.
Owner:WUHAN UNIV

Junction termination structure of transverse high-pressure power semiconductor device

The invention relates to a junction termination structure of a transverse high-pressure power semiconductor device, belonging to the technical field of semiconductor power devices. An N-type drift region at a curvature termination of the transverse high-pressure power semiconductor device is shortened in length to ensure that the N-type drift region is spaced with a P-well region by a certain displace, wherein the spaced part is replaced by a P-type substrate, which is equivalent that additional electric charges of the P-type substrate are introduced so that the peak value of an electric field at a pn junction formed the original P-well region and the N-type drift region is reduced, meanwhile, a new peak value of the electric field is introduced at a pn junction formed by the P-type substrate and the N-type drift region, the radius of curvature of the curvature terminal is increased, the excessive concentration of a power line is avoided, and the puncture voltage of the device is increased, wherein the surface of the N-type drift region also can be combined with a surface RESURF structure or an ultra-junction structure. The junction termination structure has the advantages of being capable of decreasing the width of the curvature terminal of the device, saving the layout area of the device and being compatible with a CMOS (Complementary Metal-Oxide-semiconductor Transistor) process, and can be used for manufacturing the transverse high-pressure power device with the advantages of excellent performance, high voltage, high speed and low conduction loss.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Most compact flotox-based combo NVM design without sacrificing EEPROM endurance cycles for 1-die data and code storage

Disclosed is a low-cost hybrid storage solution that allows Code like sector-alterable NOR and Data like block-alterable NAND and byte-alterable EEPROM being integrated on a same die. The disclosed combo NVM design of the present invention is a truly Data-oriented NVM design that allows 2T-EEPROM to integrate both 0.5T-NAND and 1T-NOR without sacrificing any EEPROM's byte-write performance in the same die. The invention provides several new embodiment sets of preferable bias conditions of Program, Program-Inhibit, Erase and Erase-Inhibit for operating bit-write, byte-write, sector-write and page-write for several preferable Flotox-based EEPROM, NOR and NAND or combo NVM arrays that include types of shared SL, 8-pair BLs and SLS, with or without GBL, normally Erased Vt and Programmed Vt, or the reversed Erased-Vt or Programmed-Vt, etc. Further disclosed is a flexible X-decoder design to allow the flexible selection of pages to be erased to save erase time. Also disclosed is using on-chip negative voltage for FT's gate along with the less positive HV applied to FTs' channel region for same write performance but with the benefits of channel length reduction in cell and less BVDS electric requirement in peripheral devices for more scalable manufacturing process.
Owner:APLUS FLASH TECH

Organic light-emitting pixel driving circuit, driving method and organic light-emitting display panel

The invention discloses an organic light-emitting pixel driving circuit, a driving method thereof and an organic light-emitting display panel. The organic light-emitting pixel driving circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a capacitor and a light-emitting element, wherein the first transistor transmits an initialization voltage to the light-emitting element; the second transistor transmits an initialization voltage to a driving transistor and compensates for a threshold voltage of the driving transistor; the third transistor transmits a data signal voltage to the driving transistor; the fourth transistor transmits a first power voltage signal to the driving transistor; the fifth transistor is coupled between the driving transistor and an anode of the light-emitting element in series, and controls the electrical connection between the driving transistor and the anode of the light-emitting element; the capacitor is used for storing the data signal voltage transmitted to the driving transistor; and the light-emitting element is used for emitting light in response to a driving current generated by means of the driving transistor. The organic light-emitting pixel driving circuit, the driving method thereof and the organic light-emitting display panel can avoid the influence of the threshold voltage on the light-emitting element, so that the operating current driving the light-emitting element to emit light remains stable and the uniformity of the brightness of the display panel is improved.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD
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