Abstract: A surface treatment method for substrate includes: spraying liquid is provided, the spraying liquid includes silane coupling agent, leveling agent, isopropyl alcohol, ethanol, acetic acid and water; a substrate having a metallic coating disposed thereon is provided; the spraying liquid is sprayed on the metallic coating, and then spraying liquid is baked to form a transparent protecting layer on the metallic coating; and a painting layer is formed on the protecting layer. The housing formed by the surface treatment method is also provided.

Abstract: A material feeding includes a delivery assembly, a pushing assembly, and a positioning assembly. The delivery assembly deliveries workpieces. The pushing assembly is coupled to the delivery assembly and includes a cylinder. The positioning assembly includes a mounting piece and an engaging piece. The mounting piece is coupled to the cylinder and includes a slantwise slot. The engaging piece is adjacent to the delivery assembly and includes a shaft, the shaft inserts through the slantwise slot to couple the engaging piece to the mounting piece. The cylinder moves vertically to drive the mounting piece, the engaging piece moves horizontally related to the delivery assembly since the shaft slides along the slantwise slot, synchronously the cylinder pushes up the workpieces.

Abstract: A permanently-effective element for discharging any accumulation of static electrical charges from the housing of an electronic device includes a main body with an anodized layer formed on the main body. The main body defines a plurality of blind holes of varying shapes and sizes, topped with a layer of conductive paint held in place with a binding film. The incidence of oxidation of the discharging element is significantly reduced and the effectiveness of the discharging element thus improved. A method for manufacturing the housing is also provided.

Abstract: A housing includes a substrate made of aluminum or aluminum alloy, an anodic oxide film disposed on the substrate, and an abrasion resisting layer disposed on the anodic oxide film. The abrasion resisting layer is an alkylate silicon dioxide layer containing nano aluminum oxide powder. An electronic device using the housing is also described.

Abstract: An apparatus for segregating and positioning work-pieces and other objects at different desired positions includes a main body, a segregating system, and a plurality of dispensing channels defined in the main body. The segregating system has a receiving chamber and a plurality of gas inlets both defined in the main body. The receiving chamber is configured to house the work-pieces. The gas inlets are configured to allow a high-pressure gas fed therethrough into the receiving chamber. Each dispensing channel has a connecting end communicating with the receiving chamber and a positioning end opposite to the connecting end. The work-pieces are able to be driven by the high-pressure gas to move to the positioning ends through the connecting end.

Abstract: A coated article includes a metal substrate, a carbosiliconized layer formed on the metal substrate, a metal bonding layer formed on the carbosiliconized layer, and a color layer formed on the metal bonding layer. The carbosiliconized layer is formed by carbosiliconizing the metal substrate to enable elemental carbon and elemental silicon to penetrate into a surface layer of the metal substrate. The color layer consists of ceramic material. A method for making the coated article is also described.

Abstract: In a method for improving call performance of a mobile device, the strength of received signals is sent to a base station when the mobile device receives signals from the base station. The method obtains a path balance value sent by the base station, and determines whether the path balance value is greater than a predefined threshold value. The path balance value is obtained according to the strength of the received signals of the mobile device and an emission intensity of the mobile device. When the path balance value is greater than the predefined threshold value, the method obtains a transmitting power of the mobile device, and increases the transmitting power of the mobile device according to the path balance value to improve call performance of the mobile device.

Abstract: A holder for a surface contact card includes a main body, a pivotal shaft, and a cover. The main body has a latching block and defines a receiving groove configured for receiving a surface contact card. The cover includes a hinge portion and a latching tab. The pivotal shaft extends through the hinge portion and rotatably connects to the main body. The cover is pivotally and slidably engaged with the main body for covering the receiving groove, and the latching tab is latched with the block.

Abstract: A electronic device housing includes a substrate, and the electronic device housing further includes a first color layer, a metallic coating, a second color layer, and a second metallic coating formed directly on the substrate in that order. The first color layer is disposed on the substrate and covering portions of the internal surface. The first metallic coating is formed on the first color layer and completely covers the first color layer. The second color layer is formed on the first metallic coating and directly covers the portions of the internal surface which is uncovered by the first color layer. The second color layer and the first color layer have different colors. The second color layer and the first color layer are transparent or translucent. A method for manufacturing the electronic device housing is also provided.

Abstract: An electronic device housing includes a plastic substrate. The plastic substrate includes a first surface. The electronic device housing further includes an activating layer formed on the first surface. The activating layer contains metal powder. The activating layer defines a recessed portion. Some of the metal powder is partially exposed on the surface of the recessed portion. Some of metal powder is partially inserted into the plastic substrate corresponding to the recessed portion. The electronic device housing further includes an antenna layer formed on the recessed portion. The antenna layer is a metal layer. A method for manufacturing the electronic device housing is also disclosed.

Abstract: A workpiece separating device for separating workpieces from support sheets includes a lifting unit and a positioning assembly supporting the support sheets with the workpieces adhered. The lifting unit includes a lifting cylinder and two pins raised and lowered by the lifting cylinder. The two pins are raised by the lifting cylinder to push the workpieces, thereby separating the workpieces from the support sheets in turn. A method for separating workpieces from support sheets using the present device is also provided.

Abstract: A separating device for separating workpieces includes a driving unit, a supporting board, and a moving assembly. The supporting board defines a number of sliding grooves spaced from each other. The moving assembly includes a sliding board slidably assembled to the supporting board, and a plurality of first moving blocks for holding workpieces. The sliding board slides along a first direction and defines two latching holes, each extending along a second direction perpendicular to the first direction. Each of the first moving blocks extends through the latching holes to be inserted in one of the sliding grooves. The driving unit drives the sliding board to slide along the first direction. The sliding board forces the number of first moving blocks to slide along the number of sliding grooves.

Abstract: A suction device includes a baseplate, a mounting board, and at least one suction assembly. The mounting board is spaced from the baseplate. The at least one suction assembly includes two bearings and a pole. The two bearings are secured on the baseplate and the mounting board, respectively. The pole is a hollow structure and passes through the two bearings. A suction head and a connection assembly are coupled to two opposite ends of the pole. The connection assembly connects to a vacuum pump to generate a vacuum in the suction head.

Abstract: A housing includes a substrate, a transition layer disposed on the substrate, and a color layer disposed on the transition layer. The transition layer is a mixing coating layer of metal carbonitride. The metal contains titanium and one of which selected from the group consisting of aluminum, chromium, and iron. The color layer is a titanium-chromium-aluminum layer. An electronic device using the housing is also described.

Abstract: A housing includes a substrate, a transition layer disposed on the substrate, and a color layer disposed on the transition layer. The transition layer is a layer of titanium-nitride and M-nitride, wherein the M is chromium, aluminum, or silicon. The color layer is a titanium-aluminum-nitride layer. The color layer provides the appearance of enamel on the exterior of the housing. The transition layer enhances the hardness of the housing. An electronic device using the housing is also described.

Abstract: A dual card connector includes a holder and a base body. The holder defines two overlapped sliding slots for receiving cards, each sliding slot includes a group of conductive terminal assemblies, the holder includes a plurality of elastic pieces, the elastic pieces are connected to the conductive terminal assemblies. The base body includes at least two groups of connecting terminals. The holder is detachably mounted to the base body, thus the elastic pieces are resisted and electrically connected to the connecting terminals. An electronic device employing the dual card connector is also disclosed.

Abstract: In a method to unlock a touch screen of an electronic device, a press operation is received from the touch screen pressed by a user. The touch screen includes an unlocking interface. The method determines whether the press operation is within a press area of the unlocking interface. When the press operation is within the press area, the method further controls an indicator of the unlocking interface to move at a default speed, and locates a stop position of the indicator on the touch screen when the indicator stops moving. The method unlocks the touch screen when the stop position is within a predefined area of the unlocking interface.

Abstract: A device housing includes a substrate and a color layer formed on the substrate. The color layer consists substantially of titanium zirconium carbonitride. The color layer has an L* value between about 70 to about 80, an a* value between about 10 to about 15, and an b* value between about 22 to about 30 in the CIE LAB color space. The color layer provides a yellow color for the device housing. A method for making the device housing is also described.

Abstract: A portable electronic device includes a housing and at least one charging module installed in the housing. The at least one charging module includes a magnetic induction block and a coil unit positioned beside the magnetic induction block. The coil unit includes a base block and an induction coil coiled around the base block. The induction coil is configured for generating induction current under the action of a charging magnetic filed outside the housing. The magnetic induction block enhances the magnetic filed intensity acting on the induction coil.

Abstract: A method for strengthening a housing comprises the following steps: providing a housing being made of colored glaze and having an initial temperature of about 480° C. to about 550° C.; and spraying the surface of the housing using a spray solution containing potassium nitrate, potassium silicate, diatomite, and water to create an exterior layer on the surface. The exterior layer contains K+ ions, and the concentration of the K+ ions gradually decreases from a maximum value in the area of the outside surface of the exterior layer to zero in the area of the inside of the housing.