Abstract: An apparatus for dispensing a liquid or encapsulating a semiconductor device package on a tape is disclosed. The apparatus comprises: a dispensing station for dispensing a liquid encapsulant on the tape; a tape transfer station; a cover film attaching station for attaching a cover film to the tape to screen windows of the tape; and a cover film detaching station. The cover film is automatically attached to and separated from the tape by the cover film attaching station and the cover film detaching station. The apparatus prevents the liquid from flowing under the tape. In addition, a method for encapsulating a semiconductor device package having a tape is disclosed.

Abstract: A method for manufacturing a chip scale package includes: providing a redistribution substrate; attaching a semiconductor wafer to the redistribution substrate; forming external terminals on the redistribution substrate; and separating the semiconductor wafer and the redistribution substrate into individual integrated circuits. The method can further include forming a buffer layer by filling a gap between the semiconductor wafer and the redistribution substrate with a dielectric material. Another method is the same as the method described above except that instead of the semiconductor wafer, individual integrated circuit chips attach to the redistribution substrate.

Abstract: A row address circuit of a semiconductor memory device includes a signal generator that generates a pulse in an enable signal for an output circuit that provides a decoded address. The pulse has a first edge that is delayed relative to a corresponding first edge of a refresh count signal and a second edge that precedes a corresponding second edge of the count signal. Accordingly, the enable signal prevents changes in the output signal that could otherwise result from input of an external address during a refresh operation. Therefore, the present invention can prevent an invalid address by cutting off a predecoder before a transition of a refresh count signal to prohibit a change of a predecoded output.

Abstract: A method for forming a split gate non-volatile memory cell in a semiconductor device is described. The semiconductor device is defined by a cell array region, a boundary region, and a peripheral logic region. The method eliminates the formation of a conductive layer in the boundary region.

Abstract: A surface wave coupled plasma etching apparatus according to the present invention can produce a plasma within a confined area above an etching object by a microwave confinement plate, so as to prevent an upper portion of the apparatus from being sputtered by the plasma. The microwave confinement plate is interposed between a pair of glass plates, so that the microwave confinement plate is not exposed to and sputtered by the plasma during an etching process. The lower glass plate which protects the microwave confinement plate from the plasma is formed so as not to change a temperature of itself rapidly when the etching stops, and thereby an undesirable polymer adhesion to the lower glass plate is avoided.

Abstract: A merged memory-logic semiconductor device having a built-in self test (BIST) circuit is provided. The merged memory-logic semiconductor device includes a memory having a first data bus via which data is input or output in parallel, a control unit connected to the first data bus, a logic circuit connected to the control unit via a second data bus for writing data in the memory and reading the written data, and a built-in self test (BIST) circuit connected to the control unit via a third data bus of the same size as the first data bus, for testing the function of the memory. The control unit connects the logic circuit to the memory in a read/write mode and connects the built-in self test circuit to the memory in a test mode.

Abstract: A synchronous memory device capable of performing write operation with a programmable write cycle, and a data write method using the synchronous memory device. The synchronous memory device includes a memory cell array having a plurality of memory cells arranged in rows and columns, a precharge circuit for precharging a data input/output line which transmits data to be written to the memory cells, with a predetermined voltage level, and a column selection circuit for writing the data transmitted to the data input/output line to a selected memory cell, in response to activation of a column selection signal. The activation cycle of the column selection signal is determined according to the write cycle modes programmed in a mode register set. The write cycle modes can be programmed in the mode register set with system clock frequency information, so that the number of data write operations per clock cycle can be varied.

Abstract: A push button switch comprises a housing having an opening at the top and provided with a fixed contact member at the inner bottom, a stem supported to be vertically movable in and with respect to the housing, and an elastic member being capable of buckling and having one end attached to near a lower end of the stem and the other end attached to near the inner bottom of the housing, the elastic member being positioned in the housing to extend diagonally and urging the stem upward by its own resilient force. A high degree of reliability is ensured with the simple structure and a good click feeling is provided.

Abstract: A recording method for an opto-magnetic disk apparatus by which pit edge recording of an opto-magnetic disk can be achieved and the track recording density is enhanced. The recording method is applied to an opto-magnetic disk apparatus wherein a light emitting element is driven with a pulse signal to form pits on a record face of a disk and a magnetic field is applied to such pit portions to modulate the pits. According to the method, the amount of information to be included in a pit modulated is made equal to or greater than 2 bits, and the period of the pulse signal to drive the light emitting element is changed in response to a bit or bits for a fraction to be recorded.

Abstract: A movable contact piece support structure for a seesaw switch including guide portions formed in walls of the seesaw switch and slits formed by cutting the movable contact piece and bending back a pair of flaps to make a pair of bent portions. The size and shape of the guide portions and the angle at which the bent portions are bent are chosen so that the movable contact piece rests on the guide portions and on a central contact with the bent portions in contact with the guide portions. The guide portions are further shaped such that bent portions slide smoothly on the guide portions as the movable contact piece rocks back and forth between on and off positions of the seesaw switch.

Abstract: A security device includes a portable transmission unit that gives an instruction to start or stop security, a sensor that detects an abnormality of a tuner which receives a signal from the transmission unit and of an automobile, a sensor circuit having predetermined characteristics for discriminating the output of the sensor, and a security control section for causing a theft prevention device like a siren to be activated after output from the sensor circuit is received, wherein the characteristics of the sensor circuit can be set by the transmission unit.

Abstract: The invention concerns with a system for controlling a stepping motor, and more particularly with a stepping motor control system which moves a head of a disk drive unit with (1-2)-phase excitation. With the stepping motor controlling system, a driving force is produced to rotate the stepping motor by a predetermined angle with the (1-2)-phase excitation for ech step pulse supplied from the exterior, and step pulses with a plurality of cycles are used to make the stepping motor rotate at different speeds depending on the cycles of the step pulses. In that controlling system, a time period of the 1-phase excitation is changed depending on the pulse interval of the step pulses, thereby reducing a level of noisy sounds like seek noise.

Abstract: A circuit for driving a liquid crystal panel includes an A/D converter for converting image data to digital data, a shift register for generating horizontal scanning signals, a capacitor group formed of capacitors the number of which corresponds to the number of bits of digital data, a selector for selecting none or at least one capacitor from among the capacitor group on the basis of horizontal scanning signals and digital data, a power-supply section for supplying an electric charge to each capacitor, first switch sections for charging an electric charge to selected capacitors only in every horizontal synchronization period, and second switch sections for connecting all capacitors to their corresponding signal electrodes S in every horizontal synchronization period. Even if the liquid crystal panel is formed into a large screen, neither is its parts mounting surface increased considerably, nor do the costs increase. In addition, a display having a high resolution can be realized with a simple construction.

Abstract: A method of detecting an ink residual quantity in an ink jet printer, which is capable of eliminating a possibility of blank printing even when effecting a print on the large-sized paper by detecting the ink residual quantity at a high frequency and of keeping a good printing efficiency. The ink residual quantity is detected in an equispeed motion area of the carriage. The ink residual quantity can be stably detected per line without stopping the carriage and providing a special liquid level oscillation preventive mechanism.

Abstract: A lock for preventing free rotation of the movable member of a cable real relative to the stationary member includes a screw supported on a lock member in such a manner as to be screwable into either the movable member or the stationary member, and a stopper integrally formed on the lock member for preventing disengagement of the screw. The movable member can be securely locked with respect to the stationary member, and can be released from its locked position with good operational efficiency.

Abstract: The present invention relates to a push button switch which is capable of preventing deformation of a belt-like metallic plate serving as a terminal of the push button switch during its insertion molding process into the housing of the push button switch.To this end, a push button switch comprises a square housing, a belt-like metallic plate inserted in the housing so as to penetrate the housing, the housing having an outer wall from which the belt-like metallic plate protrudes outward, the belt-like metallic plate having an inner portion exposing from a bottom surface of the housing and an outer portion extending outward from the outer wall of the housing, and the outer wall being planed-off obliquely at a portion where the belt-like metallic plate protrudes.Therefore, the span of the belt-like metallic plate becomes short. Thus, the push button switch can be made compact in size.

Abstract: An optically transparent touch switch is described. The switch is of the type which comprises a pair of glass sheets, transparent electrodes formed on one side of each glass sheet in such a way that the transparent electrodes are facing each other, and a spacer provided between the paired glass sheets to establish a given gap therebetween. The spacer is made of a dispersion which comprises an adhesive resin, spherical fine particles of a transparent resin, and hard fine particles of glass fibers having substantially the same diameter as a size of the spherical fine particles.

Abstract: An in-mold decorated illumination panel including an indicator sheet, an ink printed layer formed on a back surface of the indicator sheet, the ink printed layer having a printed indicator portion, and a molded layer formed on a back surface of the ink printed layer by injection molding, wherein the printed indicator portion is illuminated from the back surface of the ink printed layer to effect indication of the printed indicator portion on a front surface of the indicator sheet. An ink dissolution preventing sheet is interposed between the ink printed layer and the molded layer for preventing ink of the printed indicator portion from being dissolved away by pressure of a molding material in the injection molding.

Abstract: An optical system comprises an objective lens for moving along a recording face of an optical disk in the radial direction of the optical disk so that an optical axis thereof is almost perpendicular to the recording face, a reflecting mirror for moving together with the objective lens and whose reflecting axis extends in the radial direction, a detection optical unit, a movable mirror located to incline with respect to the optical axis extending almost parallel to the recording face from the detection optical unit and the reflecting axis of the reflecting mirror, and a mirror drive portion for rotating the movable mirror on an axis almost parallel to the recording face and shaking a light beam radiated from the objective lens onto the recording face in the radial direction. The mirror drive portion rotates the movable mirror on an axis almost parallel to an optical axis extending from the detection optical unit or on an axis almost parallel to a reflecting face of the movable mirror.

Abstract: A pickup device having a pickup body disposed in opposition with a disk and supported by plate-shaped elastic support members in such a manner as to be movable relative to a fixed portion. An end portion of each elastic support member is superimposed on a portion of the pickup body or the fixed portion or both, with an adhesive between the overlaps. The elastic support member includes a plurality of through holes arranged in a widthwise line and formed in a boundary portion between a stationary portion and a displaceable portion of the member. During assembly, when the adhesive applied at an end portion of each elastic support member is subjected to pressure, a part of the adhesive is forced into the through holes, thereby enabling an initial bond strength to be easily achieved, while preventing the adhesive from spreading beyond the region of application.