3results about How to "Good high pressure" patented technology

This invention relates to the field of split-gate MOS technology, and discloses a novel split-gate MOS device and its fabrication method, comprising: a substrate with a heavily N-type doped region at the bottom layer; a drain electrode on the lower surface of the heavily N-type doped region; an N-type buffer region on the upper surface of the heavily N-type doped region; a P-type well region and an N-type well region on the upper surface of the N-type buffer region, with the P-type well regions located on both sides of the N-type well region; a split-gate region on the upper surface of the N-type well region, the split-gate region being a trench-type structure; the lower surface of the split-gate region being lower than the upper surface of the P-type well region; lightly P-type doped regions on the upper surfaces of the N-type and P-type well regions, located on both sides of the split-gate region and in contact with it; an N-type source region on the upper surface of the lightly P-type doped region, located on both sides of the split-gate region and in contact with it; a source electrode on the upper surface of the N-type source region; and a gate electrode on the upper surface of the split-gate region. This split-gate MOS achieves low loss and other effects.

The invention relates to the technical field of drilling tools, in particular to a bit pressure regulation and control directional drilling system and method suitable for carbon dioxide yield increase or burying, and the system comprises an upper drill column, an azimuth angle control assembly and a single-bend screw drill which are sequentially connected from top to bottom; the azimuth angle control assembly comprises a barrel, the upper end of the barrel is connected with the upper drill column, and the lower end of the barrel is connected with the single-bend screw drill. The inner wall of the barrel is connected with at least one contact block, and the contact block is in contact with the peripheral surface of the upper drill column to form at least one group of friction pair; the friction pair generates radial pressing force under the action of bit pressure applied to the upper drill column, and therefore adjustable circumferential friction torque is provided and used for controlling the tool face azimuth angle of the single-bend screw drill. No electronic or hydraulic control is needed, and stable switching of tool face angles can be achieved only by adjusting bit pressure in a grading mode.