Abstract: A lead-free sealing material is provided, which contains a glass with a composition including 47.5-67.5 mole % SnO, 2.5-15 mole % MgO, and 30-40 mole % P2O5. The lead-free sealing material has excellent chemical durability, low melting temperature, and good flowability during heating. The lead-free material is particularly suitable to be used as a sealing material. The lead-free sealing material may additionally contain low-thermal-expansion powdered fillers to reduce the thermal expansion coefficient of the resulting sealing material.

Abstract: An optoelectronic device is provided. The optoelectronic device includes a P-type semiconductor substrate, an N-type transparent amorphous oxide semiconductor (TAOS) layer located on a surface of the P-type semiconductor substrate, and a rear electrode on another surface of the P-type semiconductor substrate. The N-type TAOS layer constructs a portion of a P-N diode, and serves as a window layer and a front electrode layer.

Abstract: The present invention relates to a high frequency surface acoustic wave device, which may be manufactured by the same manufacturing equipment, and with the same material, as those required for manufacturing a low frequency surface acoustic wave device. The disclosed high frequency surface acoustic wave device comprises: a piezoelectric substrate; a high acoustic velocity layer formed on the surface of the piezoelectric substrate whose acoustic velocity of the surface acoustic wave is larger than 5000 m/sec; an input transducing part; and an output transducing part; wherein the input transducing part and the output transducing part are formed in pair on or below the surface of the high acoustic velocity layer. Besides, the high acoustic velocity layer is preferably made of aluminum oxide, and formed on the surface of the piezoelectric substrate by an electron-beam evaporation process. The thickness thereof is preferably between 2 ?m and 20 ?m.

Abstract: A wide band co-planar waveguide feeding circularly polarized antenna is disclosed. The wide band co-planar waveguide feeding circularly polarized antenna comprises: a substrate having a surface; a signal feeding unit located on the surface and comprising a feeding bar, a matching portion, a first extended portion, and a second extended portion; a first ground unit located on the surface and having a first ground bar; and a second ground unit located on the surface and having a second ground bar; wherein, the first extended portion and the second extended portion are respectively extended from the matching portion. Besides, the matching portion is electrically connected with the feeding bar, the first extended portion and the second extended portion. Moreover, the feeding bar is located between the first ground bar and the second ground bar.

Abstract: The present invention relates to a porous copper sulfide nano/micro hollow sphere and a method for preparing the same. The porous copper sulfide nano/micro hollow sphere of the present invention has plural through holes and a hollow structure so as to increase the reactive area thereof. In particular, the porous copper sulfide nano/micro hollow sphere can be applied in a solar cell to enhance a photoelectric effect.

Abstract: The present invention relates to a method for modifying the surface of titanium or a titanium alloy by a fluidized bed carburization process. The surface hardness of the titanium or the titanium alloy could be improved by the fluidized bed carburization process. The above-mentioned method includes the following steps: providing a fluidized bed furnace, in which a carburizing agent containing charcoal and carbonate powders of which the weight ratio is 10˜8:0.5˜2 is used; placing titanium or a titanium alloy in the fluidized bed furnace at the temperature ranging from 900° C. to 1200° C. for carburizing the titanium metal or the titanium alloy for a period more than 3 minutes; and then taking the titanium metal or the titanium alloy out for quenching.

Abstract: A method for generating a one-time password (OTP) by using software only is provided. The method is suitable for generating a common dynamic password in a first electronic device and a second electronic device. First, an initial number is provided to the first electronic device and the second electronic devices. Then, a value is generated, encrypted into a transmission value according to the initial number, and transmitted to the second electronic device by the first electronic device. Next, the transmission value is decrypted by the second electronic device according to the initial number to obtain the value. Finally, a dynamic password is respectively generated in the first electronic device and the second electronic device according to the initial number and the value. Thereby, an OTP system is constituted.

Abstract: The invention provides a circuit system for driving a high-intensity discharging lamp, comprising a boosting circuit, an ignition coil circuit and a clamp circuit. The boosting circuit includes a first transformer and a first switch, in which the primary of the first transformer receives an input power, the secondary of the first transformer produces a boosting DC voltage, and the first switch is connected to the first transformer to control turning-on and turning-off of the first transformer. The ignition coil circuit is connected to the boosting circuit for converting the boosting DC voltage into a switching AC voltage to drive a load. The clamp circuit is connected to the boosting circuit and the ignition coil circuit for directing energy, reflected from the secondary of the first transformer to the primary of the first transformer, to the secondary of the first transformer as the first switch is turned off.

Abstract: A method for verifying a server end apparatus, suitable for verifying the identity of a server end apparatus from a client end apparatus, is provided. In the present invention, authentication data is sent to the server end apparatus by the client end apparatus, such that the server end apparatus verifies the authentication data. Afterwards, the server end apparatus must return an initial number, which is preset by the user, to the client end apparatus to verify whether the initial number is correct or not. If the initial number is incorrect, the connection with the server end apparatus is shut down. Therefore, the efficiency for verifying the server end identity is strengthened, so as to enhance the security.

Abstract: A partially reflect surface antenna includes a substrate, a reflective sheet and a plurality of supporting units. The substrate has an upper surface formed thereon a signal I/O for receiving and outputting high frequency signal. The reflective sheet partially reflects the high frequency signal and includes an array antenna block located at the surface of the reflective sheet. The plurality of supporting units support the reflective sheet to locate at the upper surface of the substrate and to maintain a predetermined distance between the reflective sheet and the substrate. The area of the array antenna block ranges from 0.31 to 0.8 times of the surface area of the reflective sheet.

Abstract: Disclosed is a method of providing a poly-Si layer used in fabricating poly-Si TFT's or devices containing poly-Si layers. Particularly, a method utilizing at least one metal plate covering the amorphous silicon layer or the substrate, and applying RTA (Rapid Thermal Annealing) for light illuminating process, then the light converted into heat by the metal plate will further be conducted to the amorphous silicon layer to realize rapid thermal crystallization. Thus the poly-Si layer of the present invention is obtained.

Abstract: A partially reflect surface antenna includes a substrate, a reflective sheet and a plurality of supporting units. The substrate has an upper surface formed thereon a signal I/O for receiving and outputting high frequency signal. The reflective sheet partially reflects the high frequency signal and includes an array antenna block located at the surface of the reflective sheet. The plurality of supporting units support the reflective sheet to locate at the upper surface of the substrate and to maintain a predetermined distance between the reflective sheet and the substrate. The area of the array antenna block ranges from 0.31 to 0.8 times of the surface area of the reflective sheet.

Abstract: The present invention is to provide an anti-reflective substrate, and the manufacturing method of the substrate. The method comprises the steps of: (a) providing a substrate; (b) depositing an amorphous silicon layer on the substrate; and (c) etching the amorphous silicon layer and the substrate by chemical etching in solutions, and the amorphous silicon layer is removed by the solutions. The effective reflectance of the anti-reflective substrate produced from the method of the present invention can be lower than 1%, and the absorption rate of the anti-reflective substrate is preferably from 70% to 90% in a wavelength range of 300 nm-900 nm.

Abstract: A dual band antenna covering both DTV and ISM bands is provided in the present invention. The antenna includes a signal line, a coupling block, a ground part and at least a floating metal strip, wherein the signal line and the coupling block are etched on upside of a substrate and connected with each other with an inset feeding structure, and the ground part and the floating metal strip are etched on backside of the substrate.

Abstract: A wide band co-planar waveguide feeding circularly polarized antenna is disclosed. The wide band co-planar waveguide feeding circularly polarized antenna comprises: a substrate having a surface; a signal feeding unit located on the surface and comprising a feeding bar, a matching portion, a first extended portion, and a second extended portion; a first ground unit located on the surface and having a first ground bar; and a second ground unit located on the surface and having a second ground bar; wherein, the first extended portion and the second extended portion are respectively extended from the matching portion. Besides, the matching portion is electrically connected with the feeding bar, the first extended portion and the second extended portion. Moreover, the feeding bar is located between the first ground bar and the second ground bar.

Abstract: The present invention relates to a method to produce biodegradable polyester, which comprises the following steps: (a) mixing a carbon source, a nitrogen source and water into a reactive material to perform pretreatment; (b) providing a halophilic bacterium, a starting broth and culture with the reactive material; (c) feeding the reactive material; and (d) extracting the polyester from the fermentation broth; wherein, the bacterium has a salt tolerance of 10-30%.

Abstract: The invention relates to an enhanced mechanism for RFID reader which includes: an antenna for receiving a RFID signal transmitted from an object under test and outputting the RFID signal to the RFID reader; a metal plate disposed on an entrance of a building. The metal plate and the object under test are respectively placed on opposite sides of the antenna. The angle between the first metal plate and the second metal plate is from 30 to 180 degrees; therefore the metal plate, the antenna, and the RFID reader provide an enhanced mechanism of a RFID reader.

Abstract: The present invention relates to a circularly polarized antenna and, more particularly, to a compact circularly polarized antenna for transmitting and receiving a circularly polarized signal. The circularly polarized antenna comprises a substrate having an upper surface and a lower surface; a signal distributor; an antenna for transmitting and receiving the circularly polarized signal; and a plurality of support units. The upper surface of the substrate comprises a plurality of slots. One end of each slot overlaps with the respective ends of the other slots at a central region. The lower surface of the substrate comprises a coupling unit being electrically connected with the signal distributor, and the center of the coupling unit corresponds to the central region.

Abstract: The present invention relates to techniques to excite a circularly polarized antenna and, more particularly, to a circularly polarized antenna having a QUAD-EMC unit structure.

Abstract: A planar antenna for a radio frequency identification tag which receives or transmits an electromagnetic signal is provided. The planar antenna comprises a dielectric slab and a fractal dipole antenna. The height of the fractal dipole antenna is 0.3 to 0.7 times of the half wavelength of the electromagnetic signal, and the width of the fractal dipole antenna is 0.7 to 1.1 times of the half wavelength of the electromagnetic signal. The planar antenna achieves miniaturization and a good matching by utilizing the optimal size of the fractal dipole antenna.