3results about How to "Avoid alignment problems" patented technology

This invention discloses a planar gate SiC MOSFET device and its fabrication method. The fabrication method includes: depositing a first silicon oxide layer in a substrate; forming an N+ source region injection window mask through photolithography, development, and etching; covering the surface of the first silicon oxide layer above the P-type region with a first nitride layer; depositing a second silicon oxide layer, a second nitride layer, and a second polysilicon layer; using the second nitride layer as a barrier layer to planarize the second polysilicon layer; and sequentially etching away the second nitride layer, the second silicon oxide layer, the first nitride layer, and the first silicon oxide layer above the P-type region to form a P+ injection window. This application, by changing the process steps, eliminates the need for a P+ mask, enabling self-alignment of N+ and P+ processes. It also avoids mask alignment problems caused by wafer warpage, reduces registration deviation, improves the accuracy of the injection window region, saves costs, and allows for smaller cell sizes and optimized specific on-resistance.

The application relates to the technical field of anti-fake packaging materials, and discloses an anti-fake packaging material, which comprises a printing layer, a substrate layer, an information layer, a protective layer, a reflection layer and a bottom layer which are sequentially stacked, the information layer comprises a first optical structure with a target phase distribution and a second optical structure for generating a preset visual effect. The anti-fake packaging material has strong anti-fake performance, can consider various optical effects and reduces the cost. The application further discloses a wine box.

The invention discloses a multimode data fusion and dynamic visual target adjustment eye movement detection system and method, and belongs to the technical field of vestibular testing. The method comprises the following steps: collecting multi-modal head sensing data of a user, wherein the multi-modal head sensing data comprises data from at least two types of sensors; inputting the multi-modal head sensing data into an artificial intelligence model for fusion processing, and obtaining head posture data of the user based on a processing result; dynamically updating the position of a visual target on the display equipment according to the head posture data, so that the position of the visual target is synchronously adjusted along with the head movement; synchronously acquiring eye image data of the user; on the basis of the eye image data, iris features are recognized, and an eyeball torsion angle is calculated; and obtaining a detection result for evaluating the vestibular function based on the head posture data and the eyeball torsion angle. According to the invention, full-link anti-interference from physical intervention to algorithm compensation is realized, and the accuracy, stability and repeatability of eye movement parameter measurement in a complex clinical environment are remarkably improved.