摘要:
A method of using nanoparticles to fabricate an emitting layer of an optical communication light source on a substrate is proposed, in which a host capable of reacting with unstable ions on the surface of a rare earth ions nanomaterial is used as a carrier of nanoparticles to make the rare earth ions nanomaterial release rare earth ions, thereby forming an emitting layer that can be excited by an external current or light source to emit light.
摘要:
A device for connection between supply buses in mixed power integrated circuits includes a diode in series with a transistor with an active p-ring in a semiconductor substrate. The active p-ring surrounds the source and drain of the transistor with a conductive region having the same conductivity type as the semiconductor substrate. A control circuit coupled to the p-ring applies a bias voltage in response to an ESD event affecting the first and second conductors. The bias voltage tends to inject carriers into the semiconductor substrate which enables discharge of the short voltage pulse via a parasitic SCR in the substrate from the anode of the diode to the source of the transistor.
摘要:
The present invention relates an electrostatic discharge (ESD) protection device that is applied to a mixed voltage circuit assembly. The device comprises a RC controlled circuit subassembly and a field transistor, which the RC controlled circuit is coupled with the mixed voltage circuit assembly to substantially control the ESD protection device to be ON or OFF. The field transistor is coupled between a first power supply and a second power supply of said mixed voltage circuit assembly, which is off on the condition of a normal operating condition and is conducting as an ESD event occurred.
摘要:
An ESD protection apparatus for dual-polarity input pad comprises a triple-well formed with a first, second and third regions to form an SCR structure. A first and second ground connection regions of opposite conductivity types are formed on the first region, a first and second input connection regions of opposite conductivity types are formed in the third region, and a bridge region is formed across the second region and extends to the first and third regions. Under normal operation, the first, second, and third regions form two back-to-back diodes. Under positive polarity ESD event, breakdown is occurred between the bridge and first regions to thereby trigger an SCR circuit for positive polarity ESD protection. Under negative polarity ESD event, breakdown is occurred between the bridge and third regions to thereby trigger an SCR circuit for negative polarity ESD protection.
摘要:
This invention pertains to the discovery of mutant phytochromes that when introduced into a plant alter the photomorphogenic properties of that plant. In certain embodiments transfection of plants by nucleic acid constructs expressing the mutant phytochromes produced plants having a phenotype characterized by light-independent activation. Thus, in certain embodiments, this invention provides a transgenic plant or plant cell comprising a mutant phytochrome where the mutant phytochrome is a light-stable phytochrome; and the transgenic plant shows decreased shade avoidance as compared to the same species or strain of plant lacking the mutant phytochrome. In various embodiments the mutant phytochrome comprises a mutation at the position corresponding to tyrosine residue 276 in an Arabidopsis phytochrome where the mutation is to a residue other than tyrosine.
摘要:
The present invention discloses a laterally double-diffused metal oxide semiconductor transistor (LDMOS) and a method for fabricating the same. The LDMOS includes a substrate, a first well, a drain, a second well and a source. The substrate includes a first conductive dopant. The first well includes a second conductive dopant and formed in a part of the substrate, and the drain is located in the first well. The second well includes the first conductive dopant and formed in another part of the substrate, and the source located in the second well. The source includes a lightly doped region and a heavily doped region extending downwardly from a top surface of the substrate. The depth of the lightly doped region is more than the depth of the heavily doped region.
摘要:
The present invention discloses a laterally double-diffused metal oxide semiconductor transistor (LDMOS) and a method for fabricating the same. The LDMOS includes a substrate, a first well, a drain, a second well and a source. The substrate includes a first conductive dopant. The first well includes a second conductive dopant and formed in a part of the substrate, and the drain is located in the first well. The second well includes the first conductive dopant and formed in another part of the substrate, and the source located in the second well. The source includes a lightly doped region and a heavily doped region extending downwardly from a top surface of the substrate. The depth of the lightly doped region is more than the depth of the heavily doped region.
摘要:
The present invention discloses a laterally double-diffused metal oxide semiconductor transistor (LDMOS) and a method for fabricating the same. The LDMOS includes a substrate, a first well, a drain, a second well and a source. The substrate includes a first conductive dopant. The first well includes a second conductive dopant and formed in a part of the substrate, and the drain is located in the first well. The second well includes the first conductive dopant and formed in another part of the substrate, and the source located in the second well. The source includes a lightly doped region and a heavily doped region extending downwardly from a top surface of the substrate. The depth of the lightly doped region is more than the depth of the heavily doped region.
摘要:
An electrostatic discharge (ESD) protection circuit coupled to an input pad comprises a diode formed in a substrate and coupled to the input pad; a P deep well formed in the substrate; an N well formed in the P deep well; a first P+ doped region in the N well; and an NMOS transistor formed on the substrate, comprising a gate, a source and a drain, wherein the drain is formed in the N well and coupled to a Vcc, and the source is formed in the P deep well; and a second P+ doped region formed in the P deep well. The ESD protection circuit uses a smaller area than the conventional ESD protection circuit.
摘要:
A device for connection between supply buses in mixed power integrated circuits includes a diode in series with a transistor with an active p-ring in a semiconductor substrate. The active p-ring surrounds the source and drain of the transistor with a conductive region having the same conductivity type as the semiconductor substrate. A control circuit coupled to the p-ring applies a bias voltage in response to an ESD event affecting the first and second conductors. The bias voltage tends to inject carriers into the semiconductor substrate which enables discharge of the short voltage pulse via a parasitic SCR in the substrate from the anode of the diode to the source of the transistor.