Abstract: A cooling fan includes a fan housing and a stator and an impeller received in the fan housing. The fan housing includes a frame and a mounting portion located in the frame. The stator is received in the frame and mounted to the mounting portion. The impeller is mounted to the stator and rotatable with respect to the stator. The impeller includes a hub and a plurality of blades extending radially and outwardly from the hub. Each of the blades includes an inner end connected with the hub and an outer end distant from the hub. Each of the blades forms a tab on the outer end at the end surface.

Abstract: A flash memory cell includes a substrate having a surface region and a flash memory cell structure on the surface region. The flash memory cell structure includes a gate dielectric layer on the surface region, a select gate on the gate dielectric layer, a cap oxide layer on the select gate, an oxide spacer on a first edge of the select gate, a tunnel oxide layer on a first region and on a second region of the surface region. The second region is an active region. The flash memory cell structure further includes a poly spacer on the first edge of the oxide spacer and a portion of the tunnel oxide layer on the first region, an ONO layer on at least the poly spacer and a control gate layer on the ONO layer.

Abstract: A assistance device and a system for purchasing and a method using the same. The method includes the following steps. A portable body is provided for a shopper to carry with. A code of a merchandise is read by the portable body to confirm the type and price of the merchandise. The information of the merchandise purchased by the shopper is recorded in the portable body and listed on a purchase list. The purchase list is transmitted to a trade center, which settles the accounts according to the purchase list and withdraws the portable body after the accounts are settled.

Abstract: The present invention discloses a fluorescent gold nanocluster, comprising: a dihydrolipoic acid ligand (DHLA) on the surface thereof, wherein the fluorescent gold nanocluster generates fluorescence by the interaction between the dihydrolipoic acid ligand and the nanocluster and the particle diameter of the fluorescent gold nanocluster is between 0.5 nm and 3 nm, wherein the wavelength of the emission fluorescence of the fluorescent gold nanocluster is between 400 nm and 1000 nm. In addition, the fluorescent gold nanocluster is used as bioprobes and/or applied in fluorescent biological label, clinical image as contrast medium, clinical detection, clinical trace, and clinical treatment etc.

Abstract: This invention relates, e.g., to a composition suitable for administration to the central nervous system (CNS), comprising a block copolypeptide hydrogel, which comprises a biologically active material that is mixed with the hydrogel or that is attached to the polypeptide chain of the hydrogel, wherein the composition is suitable for administration to the CNS. Also disclosed are methods of making and using compositions of the invention as depots or as scaffolds for cell migration, and pharmaceutical compositions and kits for implementing methods of the invention.

Abstract: A cooling fan (1) includes a fan housing (10), a stator (20), a rotor (30) and a bearing assembly (40). A tube (111) extends upwardly from a central portion of the fan housing. The stator is mounted around the tube. The bearing assembly includes a ball bearing (333) and a sleeve bearing (335) received in two ends of the tube, respectively. The rotor has a shaft (336) extending into and roratably supported by the bearing assembly. An elastic element (332) is arranged on the ball bearing to provide a pressing force on the ball bearing toward the sleeve bearing. An oil retaining element (339) is arranged around a bottom end of the shaft and spaced from the shaft. The oil retaining element is attached to the sleeve bearing to provide oil for the sleeve bearing.

Abstract: A package structure with ESD (electrostatic discharge) and EMI (electromagnetic interference) preventing functions includes: a carrier having first and second ground structures electrically insulated from one another; a semiconductor component disposed on one surface of the carrier and electrically connected to the first ground structure; and a lid member disposed to cover the carrier and the semiconductor component and electrically connected to the second ground structure. The semiconductor component and the lid member are electrically connected with the first ground structure and the second ground structure, respectively, such that electrostatic charges and electromagnetic waves can be conducted away individually without damaging the semiconductor component, thereby improving yield and reducing the risk of short circuits.

Abstract: A heat dissipation fan includes a fan frame, a bearing assembly, a stator and a rotor. The fan frame includes a base and a central tube. The central tube includes an open top end and an open bottom end. The base defines a receiving concave at a bottom surface thereof. The receiving concave communicates with the central hole. A top wall is formed by the base over the concave. A sidewall is formed between the top wall and the bottom surface of the base and surrounds the concave. A plurality of first locking units extend from the top wall into the receiving concave. The bearing assembly includes an oil sealing cover for sealing the open bottom end of the central tube. The oil sealing cover includes a plurality of second locking units which are detachably interlocked with the first locking units to mount the oil sealing cover to the base.

Abstract: A polysilicon spacer as a floating gate of a Flash memory device. An advantage of such spacer structure is to reduce a cell size, which is desirable for state-of-the-art Flash memory technology. In a preferred embodiment, the floating gate can be self-aligned to a nearby and/or within a vicinity of the select gate of the cell select transistor. In a preferred embodiment, the present invention preserves a tunnel oxide layer after the removal, using dry etching, a polysilicon spacer structure on the drain side of the select transistor gate. More preferably, the present method provides for a certain amount of tunnel oxide to remain so as to prevent the active silicon area in the drain region of the memory cell from being etched by the dry etching gas.

Abstract: A fan frame (20) includes a bracket (22) and a base (24). The bracket includes a sidewall (225). An air inlet (228) is defined in a top side of the sidewall. An opposite air outlet (229) is defined in a bottom side of the sidewall. A plurality of first locking units (227) are formed on the sidewall. The base includes a main body (240), a plurality of ribs (242) and a plurality of second locking units (245). Each rib has a fixed end (2421) connected with the main body, and an opposite free end (2422). Each second locking unit is formed at the free end of a corresponding rib. The second locking units are detachably interlocked with the first locking units to mount the base to the bracket thereby to form the fan frame. The bracket and base are formed by materials having different strengths.

Abstract: A cooling fan (1) includes a fan housing (10), a stator (20), a rotor (30) and a bearing assembly (40). A tube (111) extends upwardly from a central portion of the fan housing. The stator is mounted around the tube. The bearing assembly includes a ball bearing (333) and a sleeve bearing (335) received in two ends of the tube, respectively. The rotor has a shaft (336) extending into and roratably supported by the bearing assembly. An elastic element (332) is arranged on the ball bearing to provide a pressing force on the ball bearing toward the sleeve bearing. An oil retaining element (339) is arranged around a bottom end of the shaft and spaced from the shaft. The oil retaining element is attached to the sleeve bearing to provide oil for the sleeve bearing.

Abstract: A device and a method for locking and calibrating a frequency is provided for receiving a precise external clock frequency to lock an adjustable oscillator that controls an oscillation frequency to a predetermined frequency. The device comprises a process unit and a frequency adjusting unit. The process unit is provided for comparing the oscillation frequency with a precise frequency to generate a frequency difference and a calibration signal according to the frequency difference. The frequency adjusting unit generates a locking voltage according to the comparison result of the calibration signal and the internal oscillation frequency for locking the oscillation frequency of the external adjustable oscillator to the predetermined frequency, so that the adjustable oscillator still can output a precise oscillation frequency without requiring a precise oscillator.

Abstract: A cooling fan includes a fan housing and a stator and an impeller received in the fan housing. The fan housing includes a frame and a mounting portion located in the frame. The stator is received in the frame and mounted to the mounting portion. The impeller is mounted to the stator and rotatable with respect to the stator. The impeller includes a hub and a plurality of blades extending radially and outwardly from the hub. Each of the blades includes an inner end connected with the hub and an outer end distant from the hub. Each of the blades forms a tab on the outer end at the end surface.

Abstract: A polysilicon spacer as a floating gate of a Flash memory device. An advantage of such spacer structure is to reduce a cell size, which is desirable for state-of-the-art Flash memory technology. In a preferred embodiment, the floating gate can be self-aligned to a nearby and/or within a vicinity of the select gate of the cell select transistor. In a preferred embodiment, the present invention preserves a tunnel oxide layer after the removal, using dry etching, a polysilicon spacer structure on the drain side of the select transistor gate. More preferably, the present method provides for a certain amount of tunnel oxide to remain so as to prevent the active silicon area in the drain region of the memory cell from being etched by the dry etching gas.

Abstract: A heat dissipation device includes a heat sink, an axial fan and a fan cover. The heat sink includes a plurality of fins defining a plurality of longitudinal airflow channels therebetween. The axial fan is mounted on a top side of the heat sink. The axial fan defines an air inlet located adjacent to and communicating with the airflow channels of the heat sink. The fan cover is between the heat sink and the axial fan. The fan cover includes a side plate surrounding a top end of the heat sink to make the axial fan just draw cooling air into the heat sink from a position around a bottom end of the heat sink. The cooling air flows upwardly through the heat sink to the air inlet of the axial fan to thereby take heat away from the heat sink.

Abstract: A heat dissipation device (1) includes an electric fan (20) and a heat sink (10). The fan includes a fan impeller (40) which includes a hub (41) and a plurality of blades (42) extending radially and outwardly from the hub (41). The hub (41) includes an upper portion (417) and a bottom portion (413). An air inlet (411) is formed near the upper portion (417) and an air outlet (412) is formed near the bottom portion (413). The blades (42) have portions on the bottom portion of the hub which are extended toward a center of the air outlet for driving more air to the center of the air outlet (412), whereby more air can flow to a center of the heat sink.

Abstract: A fan motor includes a frame (10) and a motor (30). The frame includes a supporting plate (13) and a central tube (16). A pair of arms (181) extends upwardly from the supporting plate and spaces from each other to form a gap (184) therebetween. Each arm has a barb (182) at a top end thereof. The motor includes a circuit board (31) and a stator (33). The stator defines an axial hole (338) for receiving the central tube therein. The circuit board defines a fixing hole (312) therein corresponding to the pair of arms. The pair of arms extend through the fixing hole with the barbs of the pair of arms abutting on the circuit board. A pin (191) is inserted into the gap between the pair of the arms.

Abstract: A heat dissipation fan includes a fan frame, a bearing assembly, a stator and a rotor. The fan frame includes a base and a central tube. The central tube includes an open top end and an open bottom end. The base defines a receiving concave at a bottom surface thereof. The receiving concave communicates with the central hole. A top wall is formed by the base over the concave. A sidewall is formed between the top wall and the bottom surface of the base and surrounds the concave. A plurality of first locking units extend from the top wall into the receiving concave. The bearing assembly includes an oil sealing cover for sealing the open bottom end of the central tube. The oil sealing cover includes a plurality of second locking units which are detachably interlocked with the first locking units to mount the oil sealing cover to the base.

Abstract: A cooling fan includes a fan housing (10) having a central tube (102) extending upwardly therefrom, a bearing (40) received in the central tube, a stator (20) mounted around the central tube, a rotor (30), and a cover (50). The bearing defines a bearing hole (47) therein. The rotor includes a hub (32), a plurality of blades (34) extending outwardly from the hub, and a shaft (36) extending downwardly from the hub into the bearing hole of the bearing. The cover is mounted around the shaft and arranged on the bearing to seal a top end of the bearing. The cover is made of powders by sintering and thus has a plurality of pores to generate capillary force to absorb lubricant oil leaking out of the bearing.

Abstract: The present invention discloses a method to define a drafting range based on a curve with a plurality of points drawn by a user. A writing character is shown in a display based on the drafting range. The method includes the following steps. The first step is to gather coordinate positions of points. Then, these coordinate positions are compared to each other to get a maximum coordinate position and a minimum coordinate position. A drafting range is generated based on the maximum coordinate position and the minimum coordinate position. Next, the drafting range is corresponded to a display range of a display to define a ratio of the drafting range to the display range. Finally, the writing character is adjusted and displays in the display based on the ratio.