37results about How to "Free from contamination" patented technology

The invention provides a micro electro mechanical system (MEMS) device and a manufacture method of the MEMS device. The device comprises a first interlayer dielectric layer, a cavity, an opening combination, an MEMS movable electrode, a second interlayer dielectric layer, a third opening and a third interlayer dielectric layer, wherein the first interlayer dielectric layer is positioned on a semiconductor substrate, the cavity is positioned in the first interlayer dielectric layer, the opening combination is positioned in the first interlayer dielectric layer arranged above the cavity, is communicated with the opening combination and comprises a first opening and a second opening, the side walls of the first opening and the second opening are not aligned, a lug boss is formed between the first opening and the second opening and is exposed out by the second opening, the MEMS movable electrode is suspended and placed in the cavity and can move relative to the cavity, the second interlayer dielectric layer is positioned on the first interlayer dielectric layer, the third opening is positioned in the second interlayer dielectric layer and is communicated with the opening combination, in addition, the position of the third opening does not exceed the position of the lug boss, and the third opening is fully filled by the third interlayer dielectric layer. The obtained MEMS device can normally work, and the reliability of the MEMS device is improved.

The invention discloses a torque measuring mechanism for a spanner. The torque measuring mechanism at least comprises a measuring barrel, a fixed ring and a sleeve, wherein a spiral track is sunken into the barrel, the measuring barrel can be stressed to automatically rotate, and the exterior of the barrel displays a plurality of scales; the fixed ring is used for limiting the measuring barrel to automatically rotate without displacement; and the sleeve is limited at the outer part of the measuring barrel and provided with a window facing the scale part. The torque measuring mechanism can assist a user in easily identifying the torque value of the adjusted spanner.

The invention discloses an image sensing element, which comprises a circuit board, an image sensing chip, a plurality of wires, a first annular colloid, a second annular colloid and a filter. The image sensor chip is arranged on the circuit board, and the image sensor chip has an active surface away from the circuit board. A plurality of wires are electrically connected to the image sensor chip and the circuit board. The first annular colloid is configured on the circuit board. The first annular colloid surrounds the image sensor chip and covers the surrounding areas of the wires and the active surface. The second annular colloid is configured on the first annular colloid. The optical filter is arranged on the second annular colloid to cover the image sensor chip. In this way, the image sensor chip is not easily stained by dust.

The invention discloses an inflatable comb, comprising a comb body and a comb handle, wherein the comb body comprises a first comb body and a second comb body; the first comb body comprises a cavity made of flexible material, a hole used for inflating and deflating is arranged in the cavity, comb bristles are arranged on the exterior of the cavity, massage grains are arranged on the comb bristles, and the diameter of the massage grains is more than the diameter of the comb bristles; the second comb body is sleeved on the outside of the first comb body, a plurality of third through holes are arranged in the second comb body, the diameter of the third through holes is more than the diameter of the comb bristles and is less than the diameter of the massage grains, and the comb bristles pass through the third through holes. When air is inflated to the cavity, the comb bristles extend out of the third through holes, the comb is ready for use, when the air in the cavity is deflated, the comb bristles retract to the third through holes, and the massage grains block the third through holes, so that the comb bristles are protected from being contaminated by dust, and the inflatable comb can increase the pleasure of a user.

The invention provides a grinding device for grinding a heat transfer printing color paste. The grinding device comprises a base rack, wherein the base rack is fixedly provided with a sand mill, a control assembly and a power assembly; the power assembly comprises a motor, and the sand mill comprises a grinding barrel and a plurality of grinding media positioned in the grinding barrel. The grinding device further comprises a circulating assembly, wherein the circulating assembly comprises a circulating barrel, a circulating pump and a plurality of conduits. The discharge port of the grinding barrel is communicated with the feed port of the circulating barrel by virtue of the conduit, and the feed port of the grinding barrel and the discharge port of the circulating barrel are respectively connected with the outlet and inlet of the circulating pump. The invention further provides a grinding process utilizing the grinding device. The grinding device provided by the invention has the characteristics of simple structure, favorable heat dissipation effect, low noise, capability of continuous production, low production cost, high grinding efficiency, and high quality of grinded products.

The present invention provides a PS@TiO with non-iridescent effect 2 Structural chromatic film and its preparation method and application, first adopts soap-free polymerization and mixed solvent method to prepare PS@TiO with uniform particle size and monodispersity 2 Microspheres, good sphericity, TiO with a diameter of about 8nm 2 Nanoparticles are uniformly coated on the surface of PS microspheres to form TiO with a thickness of about 10nm 2 Shell. Mix it with carbon black material evenly and spray it with a spray gun to get a structural color film. The color of the thin film of the invention does not change with the change of the viewing angle, the color is stable, and it is not easy to fade, has broad application prospects in the field of color display, and expands the types of amorphous photonic crystal structural color thin film materials. The preparation method of the present invention is simple, repeatable, environmentally friendly, safe and non-toxic; the spraying method has low requirements on the substrate and coating environment, and is suitable for constructing a structurally colored film on the surface of various materials, and the spraying method can be prepared in a large area, which is easy Realize industrialization.

The device has a compression body i.e. band cone, compressing a fiber band. A sensor part (13) is arranged at a measuring channel for measuring of pressure that is exerted by the fiber band in the channel. The sensor part comprises a scanning element (5) for recording of the pressure, and a measuring body i.e. measuring spring (6), that co-acts with the scanning element. The measuring spring is distanced from the scanning element for measuring of the pressure. A universal serial busstandard socket is provided on a conductor board (7). An independent claim is also included for a method for measuring mass of the moved fiber band.

A method for manufacturing a semiconductor is provided. A layer of protective film (13) is deposited on dummy wafers (10), and the dummy wafers (10) are fully covered by the protective film (13). During a thermal oxidation process, the dummy wafers (10) can not be oxidized, thus loss of the dummy wafers can be reduced, cost of production can be decreased, and particles produced due to oxidation of the dummy wafers can be avoided, to prevent the wafers (12) to be oxidized from contamination.

Known devices for measuring the mass of a flowing medium can be impaired in their measurement precision by fluid components carried along in the medium. The device (1) according to the invention has a ricochet body (25), which is disposed upstream of the measuring element (21) and is at least partially encompassed by an outer ring (30), where the outer ring (30) constitutes a section inside the outer ring (30) that tapers in the flow direction (18) in order to deflect fluid components, which are carried along in the flow (18), away from the measuring element (21) by means of the ricochet body (25). The invention is provided for measuring the mass of a flowing medium, in particular for measuring the intake air mass of internal combustion engines.

The invention relates to a garbage can cover capable of automatically opening the cover. The garbage can cover comprises a main body, a driving mechanism and an opening cover, wherein the driving mechanism is arranged on the main body; the driving mechanism comprises a circuit board connecting power source, a motor and a transmission device; the circuit board drives the motor; the motor controls the transmission device; the opening cover comprises a first end and a second end; the first end is provided with a linked part; a rotating shaft is arranged between the two ends; the linked part is driven by the transmission device; and the opening cover rotates around the rotating shaft.