4results about How to "Improve erase effect" patented technology

This invention provides a building-based facial recognition monitoring device and method, belonging to the technical field of monitoring devices. It includes a mounting box; a monitoring camera rotatably connected to the inner wall of the mounting box via a hinge, with two lenses fixedly mounted on the side of the camera; a washing box fixedly connected to the side of the mounting box and communicating with it; and a washing ring fixedly connected to the side of the mounting box, corresponding to the washing box. A transmission gear, through meshing with two driven springs, drives two pins to rotate, thereby causing two brush heads to rotate. The two brush heads, through rotation, brush away water mist from the two lenses, thus wiping away the water mist. This prevents the camera lenses from being blocked by water mist condensation when the monitoring device is installed at the entrance of an underground parking lot, avoiding a decrease in camera clarity and allowing the monitoring equipment to adapt to humid weather conditions, improving camera clarity.

The application provides a flash memory device and a manufacturing method thereof. After removing a hard mask layer, a floating gate material layer is etched to form a floating gate under a first sidewall and form a floating gate tip at the top of the sidewall of the floating gate away from a source line. The application optimizes the process flow of the flash memory device, cancels the etching step of the floating gate material layer before the forming step of the first sidewall, and forms the floating gate tip at the top of the sidewall of the floating gate away from the source line, which reduces the influence of the thickness variation of the floating gate on the sharpness of the floating gate tip and facilitates the further size reduction of the flash memory device. Further, the application exposes the floating gate tip by shortening the thickness of the first sidewall, which optimizes the erasing effect of the flash memory device.

The application relates to a FLASH device and a forming method thereof. The forming method of the FLASH device comprises the following steps: forming a substrate, the substrate comprising a substrate, a plurality of unit structures located above the substrate and an isolation groove located between adjacent unit structures, the unit structure comprising a floating gate and a dielectric layer covering the floating gate; forming a filling layer filling the isolation groove and covering the dielectric layer; forming an auxiliary layer covering the filling layer, the etching selection ratio of the auxiliary layer and the filling layer reaching 1:1; etching back the auxiliary layer and the filling layer at the same etching rate, removing the auxiliary layer and part of the filling layer, and the surface of the remaining filling layer away from the substrate being flush with the surface of the dielectric layer away from the substrate. The application reduces or even avoids the generation of a filling layer sharp corner at the edge of the isolation groove, and eliminates the influence of the filling layer sharp corner on the subsequent deposition of an erasing layer.

The application discloses a liquid crystal handwriting board and belongs to the technical field of display. The liquid crystal handwriting board comprises a first substrate, a second substrate and a liquid crystal layer. A transistor in the first substrate is electrically connected with a pixel electrode, and the transistor is sensitive to light. Here, the area of the channel region of the transistor is large. Therefore, the transistor is more likely to be turned on after being irradiated by target light, that is, the sensitivity of the liquid crystal handwriting board is high, and thus the erasing effect of the liquid crystal handwriting board is good.