Abstract:
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.
Abstract:
A dual-band and dual polarization antenna includes a first baseboard and a second baseboard spacing apart from each other. A top surface of the first baseboard includes a first radiation part and a second radiation part. The second radiation part encloses the first radiation part and does not contact the first radiation part. The second baseboard includes a top surface facing the bottom surface of the first baseboard and a bottom surface. The top surface of the second baseboard includes a ground portion and two slot pairs each of which includes two slots. The two slots comprised in each slot pair are symmetrical to each other, and the symmetrical center of each slot pair aligns with the center of the first radiation part. The bottom surface includes a first microstrip line and a second microstrip line for feeding back wireless signals.
Abstract:
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.
Abstract:
A resistive memory including a transistor and a variable resistor is disclosed. The transistor includes a gate, a source and a drain. The variable resistor is coupled between the drain and a node. During a setting period, the gate receives a first gate voltage, the source receives a first source voltage, the node receives a first drain voltage, and the first source voltage is equal to a grounding voltage. After the setting period, if a resistance value of the variable resistor is not less than a first pre-determined value, a first verification operation is performed. When the first verification operation is being performed, the gate receives a second gate voltage, the node receives a second drain voltage less than the first drain voltage, and the source receives a second source voltage equal to the grounding voltage.
Abstract:
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.
Abstract:
An interactive device is provided. The interactive device has a display device; a camera, for continuously filming a plurality of images in front of the display device, wherein the plurality of images includes at least one first object; and a processor, connected to the display device and the camera, for receiving the plurality of images, displaying the plurality of images on the display device, determining occurrence of an interactive movement of the first object in the plurality of images, designating an interactive object in the plurality of images when the interactive movement is detected, analyzing at least one characteristic of the interactive object, and controlling displayed images on the display device according to a trace of the interactive object.
Abstract:
The present invention provides a LED (Light Emitting Diodes) traffic signal device including a plurality of LEDs, a light-distribution lens and a Fresnel lens arranged between the plurality of LEDs and the light-distribution lens. The Fresnel lens is formed with multiple sections coaxially arranged with respect to an optical axis, every section having a different radius of curvature corresponding to a different focal distance.
Abstract:
A stepless unidirectional rotation device includes a housing, a connecting component, a lower roller bearing, turntable assembly, a switching mechanism, a suppressing component and an upper roller bearing. The housing has a receiving room. The connecting component includes a shaft, and one end of the shaft extends out of the receiving room. The lower roller bearing is disposed in the receiving room and rolling contacts with the housing. The turntable assembly includes a rotating disc and a washer. The rotating disc includes a flat surface and an oblique surface. The switching mechanism is connected with the rotating disc. The suppressing component is disposed in the receiving room and is set around the shaft. The upper roller bearing is sandwiched between the washer and the suppressing component and rolling contacts with the suppressing component. Thus, the self-locking or loose problem can be avoided.
Abstract:
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.
Abstract:
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.