摘要:
In a multi-chip module, a laminate wiring board is formed with stepped recesses. Electrodes to be connected to the electrodes of a bare-chip semiconductor device are subjected to non-electrolytic gold plating. This realizes wire bonding which is as short in distance and as low in loop as possible. To seal each recess with insulating resin, use is made of screen printing using a mesh screen which has a great aperture ratio and a small thickness.
摘要:
Disclosed is a method of manufacturing bare chip mounting multi-layer printed circuit board in which arbitrary numbers of wiring circuit conductor layers and insulating layers are alternately stacked on one or both surfaces of a printed circuit board as a substrate, and a recessed portion with an upper opening capable of mounting and resin-encapsulating a bare chip part is formed on the surface of the printed circuit board, wherein at least the uppermost one of the insulating layers is made from a photosensitive resin, and the bare chip part mounting recessed portion is formed by photoetching the insulating layer made from the photosensitive resin. Since the bare chip part mounting recessed portion is formed by photoetching, the recessed portion can be easily and reliably formed. This results in a high product accuracy and allows a packaged part to be freely, additionally mounted even on the recessed portion.
摘要:
An object of the invention is to provide an application method capable of facilitating the application of the soft contact lens without using any instrument, a liquid for contact lenses capable of being used for the application method, and a soft contact lens package. The present invention is a method for applying a soft contact lens, including a shrinkage step of shrinking a soft contact lens by contacting the soft contact lens with a liquid for contact lenses, the liquid for contact lenses being capable of shrinking the soft contact lens to a state of being more intensively shrunken than an equilibrium state thereof in a physiological saline; and an application step of applying the shrunken soft contact lens to the eye, in which after the application step, the size of the soft contact lens is restored.
摘要:
A lens assembly includes a barrel having an object-side opening and an image-forming-side opening. The barrel further has a positioning section that positions an image-forming-side surface of a lens by having line contact around an optical axis at a center. The positioning section is disposed at a position that is closer to an object side than the image-forming-side opening of the barrel is. The barrel also has an image-forming section that extends from the positioning section to a center of the optical axis along the image-forming-side surface of the lens and forms an edge of the image-forming-side opening of the barrel.
摘要:
A lens assembly has: optical members including lenses and spacing rings; and a ceramic lens frame into which the optical members are inserted. A solid lubricant is applied to at least one of a part of the inner peripheral surface of the ceramic lens frame, which part is to be in contact with at least the outer peripheral surfaces of the optical members, and the outer peripheral surfaces of the optical members. Subsequently, the lenses and spacing rings are alternately inserted into the ceramic lens frame and then pressed by a pressing ring.
摘要:
The transfer apparatus includes a light source, a transmission type image display device in which a liquid crystal layer is held between two sets of substrates and polarizing plates and a photosensitive recording medium. The light source, the image display device and the photosensitive recording medium are arranged in series along a direction in which light from the light source advances and the image display device and the photosensitive recording medium are arranged in a non-contact state. A display image transmitted from the transmission type image display device is transferred to the photosensitive recording medium. A distance between the image display device and the photosensitive recording medium and a sum total of thicknesses of the substrate and the polarizing plate at least on a side of the photosensitive recording medium in the image display device are set in accordance with a definition of the display image.
摘要:
The present invention provides a system capable of individually controlling each of receiving devices while making full use of the advantages of broadcasting. Simultaneous transmission is carried out from a broadcasting device 2 to a plurality of receiving devices 6 via a broadcasting path. Further, the broadcasting device 2 sends operation control data to the receiving device 6 through a communication path. The receiving device 6 changes its operation in accordance with the operation control data when received broadcasting is decoded. In this way, each of the receiver devices 6 can be controlled individually using the operation control data while making full use of the advantages of broadcasting.
摘要:
The transfer apparatus includes a light source, a transmission type image display device in which a liquid crystal layer is held between two sets of substrates and polarizing plates and a photosensitive recording medium. The light source, the image display device and the photosensitive recording medium are arranged in series along a direction in which light from the light source advances and the image display device and the photosensitive recording medium are arranged in a non-contact state. A display image transmitted from the transmission type image display device is transferred to the photosensitive recording medium. A distance between the image display device and the photosensitive recording medium and a sum total of thicknesses of the substrate and the polarizing plate at least on a side of the photosensitive recording medium in the image display device are set in accordance with a definition of the display image.
摘要:
A semiconductor output circuit serves as an interface circuit between LSIs having a high and a low supply voltages. The output circuit has at least a pre-buffer and an output stage circuit. The output stage circuit has a pull-up n-channel transistor arranged between an output pad and a low-voltage power source. The output pad may receive a high voltage from an external circuit, or the LSI operating with high supply voltage. The pre-buffer applies a voltage in the range of a ground voltage and a high voltage to the gate of the pull-up transistor, to turn on and off the pull-up transistor. The output stage circuit further has a reverse current prevention circuit formed between and connected to the low-voltage power source and the pull-up transistor, to block a reverse current flowing from the output pad to the low-voltage power source when the high voltage is applied to the output pad.
摘要:
An LSI chip is mounted on an LSI board. Sub-buffer circuit areas where input buffers, output buffers or input/output buffers are to be formed are provided in signal lines extending from the pad to the internal circuit of the LSI chip. Each sub-buffer circuit area has a plurality of basic elements, such as transistors and resistors, connected in parallel to one another so that different combinations of those elements can be selected by switches. A latch controller is incorporated in the LSI chip, and it has latch circuits serially connected to form a shift register structure. This latch controller sends a program signal for determining the buffer circuit characteristic to the sub-buffer circuit areas. This program signal is generated when program data is input to the latch controller. The program data is given serially via input buffers from the pads on the LSI chip. The latch controller transfers the program data to the latch circuits one after another in synchronism with a clock signal. Those pads connected to the output buffers become signal extending terminals to another circuit.