Abstract:
A mask box having a buckling structure includes a base, a cover and a plurality of buckling elements. The base is configured to support a mask and has a plurality of troughs. The cover covers the base and has a plurality of pivotal portions. The buckling elements are positioned to correspond to the troughs. Each buckling element includes an engaging block and an elastic arm connected to the pivotal portion. The engaging block moves away from the periphery of the cover when the engaging block is subjected to an external force. The engaging block is buckled into the trough via an elastic restoring force of the at least one elastic arm when the external force is removed. By this arrangement, the assembly of the buckling elements is simplified and its product cost is reduced. Further, the present invention conforms to the requirements for environmental protection.
Abstract:
A double-sided copper foil substrate, which comprises: a polymer layer; a first copper foil; an adhesive layer formed on the polymer layer such that the polymer layer is sandwiched between the adhesive layer and the first copper layer; and a second copper foil causing the adhesive layer to be sandwiched between the second copper foil and the polymer layer, wherein the polymer layer and the adhesive layer have a total thickness of from 12 to 25 μm. The present invention further provides a flexible printed circuit board structure utilizing the composite double-sided copper foil substrate of the present invention, wherein the second double-sided copper foil substrate has a trench for exposing a portion of the adhesive layer. The double-sided copper foil substrate of the present invention are lower in rebound and satisfying the demand for the greater number of bending and sliding cycles under a lower R angle, and particularly is suitable for thin and flexible electronic products.
Abstract:
A holographic recording and reproduction system includes a servo optical path, which is used to provide a servo mechanism, so that holographic interference fringes can be stored continuously into a holographic recording medium, and when the reproduction signals are desired, they can be fetched and obtained swiftly and accurately by making use of the servo mechanism. In addition, the servo light spot of the servo optical path is located on the optical axis of an object lens, thus reducing the image aberrations produced and raising the quality of the signals read for the servo track searching. Moreover, the light intensity distribution of the reference beams reflected by the holographic recording medium is monitored and controlled, as such realizing the analysis and adjustment of the relative distance and inclination angle between the holographic recording and reproduction system and the holographic recording medium.
Abstract:
A paper-releasing mechanism includes a paper-feeding device for feeding papers, a supporting shelf arranged under the paper-feeding device, a driving roller and an idle roller arranged in the front of the paper-feeding device and an elastic unit engaged with the idle roller and the supporting shelf. The elastic unit includes a connecting arm, act arms bending from the ends of the connecting arm respectively, two helixes each of which extends from the act arm and forms an aperture and two follow act arm each of which extends from the helix and forms a ring at the end thereof, the ring being sleeved on the rolling pivot of the idle roller, the apertures being sleeved on a pivot formed on the supporting shelf.
Abstract:
A sheet-handling apparatus includes a base, a second motor and a sheet-fetching assembly driven by the second motor. The sheet-fetching assembly has a passive gear and a floating gear. When the passive gear rotates, the floating gear revolves around the passive gear. A plurality of driving rollers are driven by a first motor. A plurality of driven rollers are driven by driving rollers, respectively. A prop assembly includes a brace arranged in the base, a prop axel engaged in the brace, a twist arm fixed at the prop axel and having a plurality of teeth for contacting with the floating gear, a swimming arm sleeved and firmly engaged with the swimming arm and a spring component installed on a support board of the swimming arm. The passive gear drives the floating gear descending and ascending. There are two motors provided in the sheet-handling apparatus in order to simplify the structure of the sheet-handling apparatus.
Abstract:
A method for improving etch uniformity during a wet etching process is disclosed. The method comprises the steps of first rinsing the wafer to form a water film over the wafer surface, followed by liquid phase etching. The water film helps the subsequent viscous etchant to be spread across the wafer surface more uniformly to thereby improve the etch uniformity.
Abstract:
A container having a top cover and a bottom cover is provided, which includes a canopy disposed on the bottom cover to form therewith a space to accommodate an article. A plurality of locators is disposed on a surface of the bottom cover so that when the bottom cover is tightly combined with the top cover, the locators are clipped between the bottom cover and the top cover to orient the canopy in a fixed position.