2results about How to "Reduce extension length" patented technology

This application provides a three-dimensional memory structure, its fabrication method, and an electronic device. The three-dimensional memory structure includes: a peripheral circuit chip, a memory array, a first word line lead-out structure, and a second word line lead-out structure. The memory array includes multiple array cell layers stacked vertically, each array cell layer including multiple memory cells arranged in an array, each memory cell including a horizontal ring-gate transistor and a capacitor arranged along a second horizontal direction; a stepped region forms a multi-layer stepped structure, the multi-layer stepped structure including a first stepped structure and a second stepped structure stacked vertically; the first stepped structure has multiple levels of first mezzanines, and the second stepped structure has multiple levels of second mezzanines; the multiple levels of first mezzanines and multiple levels of second mezzanines extend sequentially along the first horizontal direction and are opposite to each other; the first word line lead-out structure electrically connects the multiple levels of first mezzanines and the peripheral circuit chip, and the second word line lead-out structure electrically connects the multiple levels of second mezzanines and the peripheral circuit chip.

This invention discloses a rotating metal blade comb structure for a vacuum cleaner floor brush, comprising: a hair cutting mechanism including a metal blade connecting rod and metal blade comb teeth, the metal blade comb teeth and the roller assembly rotating in opposite directions; a hair gripping mechanism, located upstream of the roller assembly relative to the hair cutting mechanism, including a first comb plate and a gripper assembly, a guide assembly, and a linkage assembly arranged sequentially along the surface of the first comb plate towards the roller assembly, the gripper assembly being slidably mounted on the first comb plate, and a pressing block being provided on the linkage assembly towards the guide assembly, the pressing block being associated with the gripper assembly; and a hair adsorption mechanism including a second comb plate and an adsorption element disposed on the second comb plate. This invention can solve the problems of difficult hair removal from common floor brush rollers, where some combing and cutting mechanisms cannot guarantee the efficiency and extent of hair removal during cleaning, and may also damage the brush assembly, affecting the use of the roller brush.