Abstract: A fabrication method of a trenched power MOSFET is provided. A pattern layer having a first opening is formed on a substrate. A portion of the substrate is removed, using the pattern layer as a mask, to form a trench in the substrate. A width of the trench is expanded. A gate oxide layer is formed on a surface of the trench. A portion of the gate oxide layer on a bottom of the trench is removed, using the pattern layer as a mask, to form a second opening in the gate oxide layer. The width of the expanded trench is greater than that of the second opening. A thick oxide layer is formed in the second opening. Heavily doped regions are formed beside the thick oxide layer. A gate is formed in the trench. A body layer surrounding the trench is formed. Sources are formed beside the trench.

Abstract: A crystal oscillator includes a cover, a crystal blank and an Integrated Circuit (IC) chip. The cover has a surface, a cavity formed in the surface, a plurality of conductive contacts and a conductive sealing ring. The conductive contacts are disposed on the surface, and the conductive sealing ring is disposed on the surface and surrounds the conductive contacts. The IC chip is connected to the conductive contacts and the conductive sealing ring, and forms a hermetic chamber with the cover and the conductive sealing ring. The crystal blank is located in the hermetic chamber, and is electrically connected to the IC chip. Furthermore, a method for manufacturing a crystal oscillator is also provided.

Abstract: Disclosed is a carbon nanotube powder, including a carbon nanotube averagely mixed with a dispersant, wherein the carbon nanotube and the dispersant have a weight ratio of 30:70 to 90:10. The carbon nanotube has a diameter of 10 nm to 100 nm, and a length/diameter ratio of 100:1 to 5000:1. The dispersant is an alternative copolymer, a block copolymer, or a random copolymer polymerized of a solvation segment (A) and a carbon affinity group (B). The carbon nanotube powder can be blended with a thermoplastic material to form a composite, wherein the carbon nanotube and the composite have a weight ratio of 0.5:100 to 50:100.

Abstract: This invention provides an image capturing lens system in order from an object side to an image side comprising four non-cemented lens elements with refractive power: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface; a plastic third lens element having a concave object-side surface and a convex image-side surface, both the object-side and image-side surfaces thereof being aspheric; and a plastic fourth lens element with negative refractive power having a concave image-side surface, both the object-side and image-side surfaces thereof being aspheric, and at least one inflection point is formed on at least one of the object-side and image-side surfaces thereof; wherein the image capturing lens system comprises a stop positioned between the first lens element and the second lens element.

Abstract: An optical lens assembly for image pickup, sequentially arranged from an object side to an image side along the optical axis, comprising: the first lens element with negative refractive power has a convex object-side surface and a concave image-side surface; the second lens element with positive refractive power has bi-convex surfaces; and the third lens element with negative refractive power, made of plastic, and which has a convex object-side surface and a concave image-side surface with at least one thereof is aspheric. By such arrangements, the optical lens assembly for image pickup satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.

Abstract: An image lens assembly includes, in order from an object side to an image side, the first lens element with positive refractive power having a convex object-side surface, the second lens element with negative refractive power, the third lens element with refractive power, the fourth lens element with positive refractive power made of plastic material, the fifth lens element with negative refractive power made of plastic material. At least one surface of the third lens element, the fourth lens element and the fifth lens element are aspheric.

Abstract: A projector includes a projection lens set, a DMD device, a prism unit, a light merging unit, a light guide unit, and a light source device. The light source device includes an LED, a laser light source, and a color wheel. The LED is positioned in a first optical path and generates a first light. The laser light source is positioned in a second optical path and generates a laser light. The color wheel is positioned in the second optical path. The laser light irradiates the color wheel to generate second and third lights. The light merging unit merges the first, second, and third lights to generate a mixed light. The light guide unit guides the mixed light to the prism unit. The mixed light is refracted to the DMD via the prism unit, and the refracted mixed light is reflected to the projection lens set via the DMD.

Abstract: A projector includes a projection lens set, a DMD, a prism unit, a light guide unit, and a light source device. The light source device includes a first and a second LEDs, a laser light source, and a color wheel. The first LED is positioned in a first optical path and generates a first light. The laser light source is positioned in a second optical path and generates a laser light. The second LED is positioned in a third optical path and generates a second light. The laser light irradiates the color wheel to generate a third light. A light merging unit merges the first, second, and third lights. The light guide unit guides the mixed light to the prism unit. The mixed light is refracted to the DMD via the prism unit. The refracted mixed light is reflected to the projection lens set via the DMD.

Abstract: A projector includes a projection lens set, a digital micro-mirror device, a prism unit, a light guide unit, and a light source device. The light source device includes a light emitting diode (LED), a laser light source, and a color wheel. The LED is positioned in a first optical path and generates a first light. The laser light source is positioned in a second optical path and generates a second light. The color wheel is positioned in the second optical path. The second light irradiates the color wheel to generate a third light. The light merging unit merges the first, second, and third lights to generate a mixed light. The light guide unit guides the mixed light to the prism unit. The mixed light is refracted to the DMD via the prism unit, and then the refracted mixed light is reflected to the projection lens set via the DMD.

Abstract: This invention provides an image capturing optical lens system in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a third lens element with negative refractive power having at least one of the object-side and image-side surfaces thereof being aspheric; a fourth lens element having at least one of the object-side and image-side surfaces thereof being aspheric; a fifth lens element having a concave image-side surface, both the object-side and image-side surfaces thereof being aspheric, at least one inflection point is formed on at least one of the object-side surface and the image-side surface thereof, and the fifth lens element is made of plastic. By such arrangement, photosensitivity and total track length of the system can be reduced, and the aberration and astigmatism of the system can be effectively corrected. Moreover, high image resolution can be obtained.

Abstract: A scanning method for determining the touch position of a touch input apparatus is disclosed. First of all, a first exposure process on light sensors of the touch input apparatus by light emitting device of the touch input apparatus is performed. Then the light sensors are scanned. A light sensor generating a signal with a maximum value is located. A region of partial scan of the light sensors is determined according to the position of the light sensor generating the signal with the maximum value. A second exposure process is performed on the light sensors. Then the light sensors within the region of partial scan are scanned. A light sensor generating a signal with a maximum value within the region of partial scan is located and a next region of partial scan is determined. The maximum value of the signal is calculated and the maximum value of the signal is compared to a predetermined value to determine whether the maximum value is higher than the predetermined value.

Abstract: A power semiconductor structure with schottky diode is provided. In the step of forming the gate structure, a separated first polysilicon structure is also formed on the silicon substrate. Then, the silicon substrate is implanted with dopants by using the first polysilicon structure as a mask to form a body and a source region. Afterward, a dielectric layer is deposited on the silicon substrate and an open penetrating the dielectric layer and the first polysilicon structure is formed so as to expose the source region and the drain region below the body. The depth of the open is smaller than the greatest depth of the body. Then, a metal layer is filled into the open to electrically connect to the source region and the drain region.

Abstract: A flexible tablet is disclosed, and particular disclosed a flexible tablet having both of a hard housing structure and a soft housing structure. The flexible tablet fix a control board in the hard housing structure for preventing the control board form bending and break resulting from external force. In the flexible tablet, the soft housing structure is applied instead of the hard housing of a conventional tablet to fix a sensing board therein. Therefore, the soft housing structure and the sensing board are integrated to form a flexible writing member of the flexible tablet. As a consequence of foregoing structure, the tablet is flexible and convenient to be stored and carried, and the cost of the tablet is reduced.

Abstract: A stable composition useful for myocardial perfusion imaging contains one or more 2-alkynyladenosine derivatives; and a solvent which is made up of water and hydroxypropyl-?-cyclodextrin.

Abstract: The present invention provides an image-capturing optical lens assembly comprising, in order from an object side to an image side, a front lens group, a stop, and a rear lens group. The front lens group comprises, in order from the object side to the image side: a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; and a second lens element with positive refractive power having a convex object-side surface and a concave image-side surface. The rear lens group comprises, in order from the object side to the image side: a third lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a fourth lens element with negative refractive power; and a fifth lens element with positive refractive power having a convex image-side surface.

Abstract: A fabrication method of a trenched power semiconductor device with source trench is provided. Firstly, at least two gate trenches are formed in a base. Then, a dielectric layer and a polysilicon structure are sequentially formed in the gate trench. Afterward, at least a source trench is formed between the neighboring gate trenches. Next, the dielectric layer and a second polysilicon structure are sequentially formed in the source trench. The second polysilicon structure is located in a lower portion of the source trench. Then, the exposed portion of the dielectric layer in the source trench is removed to expose a source region and a body region. Finally, a conductive structure is filled into the source trench to electrically connect the second polysilicon structure, the body region, and the source region.

Abstract: A trenched power semiconductor structure with reduced gate impedance and a fabrication method thereof is provided. The trenched power semiconductor structure has a silicon base, a gate trench, a gate oxide layer, and a gate polysilicon structure. The gate trench is formed in the silicon base and extended to an upper surface of the silicon base. The gate oxide layer is formed at least on the inner surface of the gate trench. The gate polysilicon structure is formed in the gate trench with a protruding portion extended form the upper surface of the semiconductor substrate upward. A concave is formed on a sidewall of the protruding portion to expose the upper surface of the silicon base adjacent to the gate trench.

Abstract: The present invention provides an image-capturing optical lens assembly comprising, in order from an object side to an image side, a front lens group, a stop, and a rear lens group. The front lens group comprises, in order from the object side to the image side: a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; and a second lens element with positive refractive power having a convex object-side surface and a concave image-side surface. The rear lens group comprises, in order from the object side to the image side: a third lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a fourth lens element with negative refractive power; and a fifth lens element with positive refractive power having a convex image-side surface.

Abstract: A method for soft configuring communication a memory device to act as a Key Card that can switch on or off some particular functions of either an application program or the memory device itself. The method comprising the steps of: connecting the memory device to an external device; running a specific application program on the external device, the application program writing and storing a specific data into the memory device, the specific data including at least a command and a key; the memory device generating a response value according to the command and key of the specific data; and the external device reading the response value from the memory device and checking a status of the response value; if the response value is checked to be valid, then the application program will be able to access the memory device by using functions defined by the command; if the response value is checked to be invalid, then functions of the application program will be restricted.

Abstract: A laptop computer includes a housing comprising a top keyboard and a manually operated switch having a first position for showing a predetermined operating mode, and a second position for showing a Bluetooth operating mode; a display hingedly connected to a rear edge of the housing; a CPU in the housing; and a Bluetooth adaptor in the housing and comprising a switch circuit, a MCU, a translator, and a Bluetooth device communication module. In the predetermined operating mode key codes are sent to the CPU via the switch circuit. In the Bluetooth operating mode the key codes are sent to the translator via the switch circuit and the MCU, the translator translates the key codes to Bluetooth key codes and sends same to the Bluetooth device communication module, and the Bluetooth device communication module transmits the Bluetooth key codes to a handheld telecommunications device as commanded by the MCU.