摘要:
A phase compensation element is disposed between a reflective type display element and a polarizing beam splitter. Composed of a crystal structure retardation layer functioning as a quarter-wave plate and an inclined-axis retardation layer functioning as an O-plate, the phase compensation element is aligned substantially parallel to a reflective surface of the reflective type display element. The inclined-axis retardation layer is made of inorganic material obliquely deposited on the crystal structure retardation layer. The inclined-axis retardation layer has a principal refractive index axis inclined at between 0° and 45° to a surface normal of the crystal structure retardation layer, and has a thickness not to increase haze of the phase compensation element.
摘要:
In an optical communication system in which communication is conducted by transmitting light through a plastic optical fiber with a core diameter in the range from 300 to 600 μm, the average beam diameter and beam divergence angle expressed in terms of numerical aperture (NA) of the light at the input face of the optical fiber are set less than or equal to 250 μm, more preferably less than or equal to 200 μm, and less than or equal to 0.25, more preferably less than or equal to 0.2 respectively.
摘要:
A light emitting apparatus which has a high output power and does not experience a decrease in the emission output power is provided. The light emitting apparatus comprises a light emitting element which has one of main surfaces thereof being used as a light emitting surface and a plurality of side faces having different areas, and a support member which has a recess with metallic members provided on the side wall surfaces thereof for reflecting the light emitted by the light emitting element. The light emitting element is placed in the recess so that the distance between the metallic member and a side face having the largest surface area among the plurality of side faces of the light emitting element is larger than the distance between the metallic member and the other side face.
摘要:
It is an object to increase a speed of a CPU operation irrespective of an operation speed of a peripheral circuit and to prevent an increase in power consumption from being thereby caused. A clock generating circuit (10) generates two clocks having phases which are equal to each other, that is, a CPU clock (CLKCPU) and a bus clock (CLKBUS). A BIU (bus interface unit) (51) controls a code bus based on the CPU clock (CLKCPU) and controls a peripheral bus based on the bus clock (CLKBUS). The clock generating circuit (10) switches a frequency of each of the CPU clock (CLKCPU) and the bus clock (CLKBUS) depending on an operation mode of an MCU. For example, a speed of the CPU clock (CLKCPU) is set to be higher than that of the bus clock (CLKBUS) in order to carry out a high-speed operation of a CPU. Also in that case, the phases of both clocks are equal to each other. Consequently, the code bus and the peripheral bus in the BIU (51) can easily be controlled.
摘要:
Agglomeration of a polycrystalline silicon film is eliminated at the time of obtaining a high quality polycrystalline silicon film by forming a silicon layer on an insulating film substrate and conducting long-term melting and re-crystallization. For this purpose, a layer or a plurality of layers of an underlayer UCL are provided on an insulating substrate GLS, the area near the surface in contact with a precursory silicon film PCF provided on this underlayer UCL is formed as an insulating film UCLP showing a film composition to improve the wettability of the melted silicon layer, and thereafter a high quality polycrystalline silicon film PSI is formed through elimination of agglomeration by melting of the precursory silicon film PCF using a laser beam LSR.
摘要:
A POF includes an inner core having a refractive index distribution and an outer core provided on periphery of the inner core. A ratio Ra/Rb of an outer diameter of the inner core to the outer core satisfies 0.67≦(Ra/Rb)≦0.87 such that an outgoing beam from an end of the POF may have a parallel area of at least 200 μm. Thus a space between the end for exiting the exit light and a light receiving device can be kept at least 200 mm without members or devices for collimating.
摘要:
In accordance with a recent high-speed trend of the CPU, it has been demanded a semiconductor device which is capable of varying the frequency of a clock signal to be input to the CPU in accordance with the access speed of the individual peripheral devices, but without using a wait controller so as to readily cope with the case where a low-speed access peripheral device is to be accessed, and in order to meet with this demand, the semiconductor device of the present invention comprises a CPU, an address decoder that decodes an address signal transmitted from the CPU and outputs an address signal specifying signal for specifying an address area in which a designated address is included, a frequency divider that divides a base clock signal and outputs one or more than one low-speed clock signals whose frequencies have been lowered, and a clock signal decision circuit that selects as to which one of the base clock signal and the frequency-divided clock signals is to be input to the CPU in accordance with the address area specifying signal output from said address decoder.
摘要:
A semiconductor memory includes a plurality of banks, a timing control circuits, and latch circuits. The timing control circuit is arranged commonly to the plurality of banks and outputs a signal for activating each bank and a signal for precharging each bank in a predetermined order at predetermined timings. Each latch circuit is arranged for each bank and latches the state of a signal output from the timing control circuit.
摘要:
A lever-coupling type connector includes a pair of one and other connector housings to be fit into each other; a lever rotatably supported by the one connector housing and having a guiding groove; the other connector housing having an introducing protrusion to be engaged with the guiding groove; wherein the lever has a locking hook protruded from its supporting shaft, and the one connector housing includes an elastic locking piece having an elastic step to be engaged with the locking hook when the lever is rotated in a direction of coupling both connector housings. The lever is urged in an anti-fitting direction by the elastic force of the elastic locking piece in a state where both connector housings are completed fit into each other. This permits the state of semi-fitting of both connector housings to be easily recognized.
摘要:
A lever fitting-type connector includes a lever returning spring having a connector-side engagement lever and a lever-side engagement lever which extend from a coil portion, a connector housing including a shaft portion and one spring end engagement portion which are formed on an outer wall surface thereof, and the one spring end engagement portion engaged with the connector-side engagement lever; and a U-shaped lever having an engagement hole for the shaft portion and the other spring end engagement portion which is engaged with the lever side coil portion.