摘要:
The present invention discloses a plasma display panel and a method for making the same. The method comprises steps of: A first substrate is provided. Elongated electrodes are formed on the first substrate. An overcoat layer is formed on the elongated electrodes and the first substrate. Then, by means of screen print, a shaping layer of grid-mesh-shaped barrier rib is formed on the overcoat layer. Screen print is applied again to form a plurality of bumps on the shaping layer of grid-mesh-shaped barrier rib; A second substrate is also provided. The second substrate extends paralleled with the first substrate so as to define a discharge space between the first substrate and the second substrate after combining the two substrates. Bumps are provided between the first stripe rib areas and the second stripe rib areas so as to define passages to let air can flow in the discharge space. By the mentioned processes, bumps are provided between the first stripe rib areas and the second stripe rib areas so as to define passages for drawing air. The process is simple and easy for precise alignment.
摘要:
A testing circuit board used in a testing system with a tester and a handler is disclosed. The testing circuit board is used for transmitting a plurality of testing signals provided by the tester to test at least two devices under test located on the handler. The testing circuit board includes a connecting board, a load board and at least two connecting interfaces. The connecting board coupled to the handler has at least two connecting sockets for respectively connecting to the devices under testing. The load board coupled to the tester has two joining sockets located corresponding to the connecting sockets. The at least two connecting interfaces are coupled between the connecting sockets and the joining sockets for transmitting the testing signals for testing the devices under testing.
摘要:
The invention provides a handler and a method for testing the same. The handler comprises a sorter and a testing module. The testing module further comprises a signal generator, a sensor, and a signal comparator. The signal generator generates and sends out a first handling signal. The sorter receives the first handling signal and correspondingly places a first electronic component on a first region according to the first handling signal. The sensor senses the first electronic component on the first region, and then correspondingly generates and sends out a second handling signal. The signal comparator is electrically connected to the sensor and the signal generator, and receives the first handling signal and the second handling signal. The signal comparator determines whether the first handling signal is equivalent to the second handling signal, and correspondingly sends out a comparing signal.
摘要:
A one-way action mechanism capable of rotating steplessly includes a main body, a rotary element and a friction element. The main body is provided thereon with a pivotal hole and a recessed space in communication with the pivotal hole. One side of the recessed space away from the pivotal hole has a friction surface. The rotary element is formed into a circular ring and is pivotally connected in the pivotal hole. The outer periphery of the rotary element is formed by a plurality of teeth. The friction element is received in the recessed space and has a gear and a friction wheel covering the gear. The friction element is restricted by an elastic element, so that the friction wheel can be brought into a rotary and frictional contact with the friction surface. An intermediate gear is drivingly engaged between the rotary element and the gear of the friction element.
摘要:
An apparatus and method for automatically offsetting the linear deviation of a V/F converter, the offset adjust pin of which is connected to a fixed resistance, and the frequency output pin of which is connected to a microcontroller unit (MCU) via an opto-isolator, a standard V/F transfer function being pre-stored in the MCU, wherein standard frequencies F1 and F0 (i.e., two coordination points (V1, F1) and (V0, F0)) are output by the V/F converter, when V1 and V0 are input as standard voltages, and the MCU may detect an error status in the V/F converter, when the V/F converter obtains real output frequencies F1′ and F0′ from real input voltages V1 and V2, and standard coordination points (F1, K1) and (F0, K0) will be corrected to (F1′, K1) and (F0′, K0′), from which a transfer function of offsetting frequency down is obtained, when the MCU processes a frequency down procedure.
摘要:
The present invention discloses an electrical connector, comprising an insulating body whose front end protrudes to form a mating portion to mate with mating electronic devices; a plurality of electrical terminals, and a shielding metal sheet capable of encompassing the insulating body. The present invention also discloses an electrical connector assembly, comprising: a first connector having an insulating body which is protrudingly disposed with a mating portion to mate with electronic device and a plurality of electrical terminals; a second connector capable of connecting with the first connector; and a shielding metal sheet which can at least encompass the first connector. The present invention can effectively shield the electrical connector from the interfering of external electronic signals to achieve normal input and output of electronic signals.
摘要:
A continuously adjustable rotation device includes a base, a first connection element combined with the base, a ring buckle, a transmission disc, a second connection element, and a rotation controller. The transmission disc is formed on the contacting portion of the base, forming an inclination angle and contacting the second connection element for transmission of force. By using the rotation controller, one can select a rotation direction by properly contacting with the transmission disc. When the rotation direction is selected, the second connection element and the transmission disc then drive the first connection element to rotate in the designated direction. One can thus perform a continuously adjustable rotation. Therefore, no alignment is needed when assembling the rotation device, which will enhance the production yield and lower the manufacturing cost.
摘要:
The present invention is to provide a charger for cellular phone comprising a body having a well and a battery compartment on its opposite surfaces, at least one pair of positive and negative terminals in the battery compartment, at least one pair of electrical contacts on the well and a charging circuit inside the body being electrically coupled to and the electrical contacts and terminals respectively. When the cellular phone is rested on the well, charging plugs of the cellular phone are electrically coupled to the electrical contacts. Thus, the charging circuit is adapted to automatically supply power from either the external power source or the cells (or batterys) received in the battery compartment to charge at least one electrical energy storage element in the cellular phone.
摘要:
A display module includes a transparent substrate, a black matrix layer, several light-shielding elements and a phase retardation film. The transparent substrate includes left-eye pixel regions and right-eye pixel regions for respectively displaying left-eye images and right-eye images. Each left-eye pixel region is adjacent to each right-eye pixel region. The black matrix layer is disposed on one side of the transparent substrate and corresponds to each boundary between the left-eye and right-eye pixel regions. The light-shielding elements are disposed on the other side of the transparent substrate and respectively correspond to the boundaries between the left-eye and right-eye pixel regions. The phase retardation film is disposed on the other side of the transparent substrate, and has first-phase retardation regions and second-phase retardation regions with difference phases. Positions of the first-phase and second-phase retardation regions respectively correspond to those of the left-eye and right-eye pixel regions.
摘要:
A signal processing system including a DAC, a comparing unit, and a control unit is provided. The DAC receives a digital input and generates an output voltage. The comparing unit receives the output voltage and compares the output voltage with a reference voltage to output an output value. The control unit receives the output value and accordingly generates the digital input in a manner of value mapping through firmware or software to calibrate the DAC. Furthermore, a self-calibration digital-to-analog converting method is also provided.