Abstract: An object is to provide an optical component lens assembling apparatus which is capable of automating the assembly of an optical component having a minute lens and an optical fiber. This apparatus includes: a fiber block fixing device 20 that fixes in position a fiber block 13 on which an optical fiber 11 is provided; a lens grasping device 21 for grasping the outer peripheral side surface of a lens 12 supplied to a lens supply position; an adhesive applying device 22; a lens moving device 23 for placing the one end surface of the lens 12, to which the adhesive has been applied, at a predetermined position of the fiber block 13; and an optical axis alignment state detecting device 24 for detecting the optical axis alignment state of the optical fiber 11 and the lens 12.

Abstract: An optical axis adjusting apparatus for an optical device includes a drive unit moving an optical component through which communication light emitted from a light source passes, a plate member disposed facing the optical component, the plate member allowing light to transmit through the plate member and reflecting light to the optical component, a photographing unit disposed on a back side of the plate member, taking an image irradiated with the light transmitted through the plate member, and a control section controlling the drive unit to move the optical component based on the image and information on optical characteristics of the light reflected by the plate member.

Abstract: A polarization-maintaining optical fiber takes the attitude of the rotation angle position establishing the maximum extinction ratio in a condition where the polarization-maintaining optical fiber receives no load. Under this situation, the first characteristic curve is derived to present the values of the extinction ratio for various relative rotation angles between the light source and the polarization-maintaining optical fiber establishing the maximum extinction ratio in response to the application of load. The second characteristic curve is likewise derived to present the values of the extinction ratio for various relative rotation angles between the light source and the polarization-maintaining optical fiber establishing the minimum extinction ratio in response to the application of load. The predetermined rotation angle position is thus defined based on the intersection point between the first and second characteristic curves.

Abstract: A polarization-maintaining optical fiber takes the attitude of the rotation angle position establishing the maximum extinction ratio in a condition where the polarization-maintaining optical fiber receives no load. Under this situation, the first characteristic curve is derived to present the values of the extinction ratio for various relative rotation angles between the light source and the polarization-maintaining optical fiber establishing the maximum extinction ratio in response to the application of load. The second characteristic curve is likewise derived to present the values of the extinction ratio for various relative rotation angles between the light source and the polarization-maintaining optical fiber establishing the minimum extinction ratio in response to the application of load. The predetermined rotation angle position is thus defined based on the intersection point between the first and second characteristic curves.

Abstract: A semiconductor forming transistors on a semiconductor substrate includes a low concentration source/drain region formed in the semiconductor substrate, a high concentration source/drain region formed in the source/drain region, a gate electrode formed on the substrate through gate oxide film, a P type body region formed under the gate electrode and placed between the source/drain regions and, plug contact portions contacting the source/drain region and arranged in plural, and a source/drain electrode connecting to the source/drain region with contact through the contact portions.

Abstract: An object is to provide an optical component lens assembling apparatus which is capable of automating the assembly of an optical component having a minute lens and an optical fiber. This apparatus includes: a fiber block fixing device 20 that fixes in position a fiber block 13 on which an optical fiber 11 is provided; a lens grasping device 21 for grasping the outer peripheral side surface of a lens 12 supplied to a lens supply position; an adhesive applying device 22; a lens moving device 23 for placing the one end surface of the lens 12, to which the adhesive has been applied, at a predetermined position of the fiber block 13; and an optical axis alignment state detecting device 24 for detecting the optical axis alignment state of the optical fiber 11 and the lens 12.

Abstract: A semiconductor forming transistors on a semiconductor substrate includes a low concentration source/drain region formed in the semiconductor substrate, a high concentration source/drain region formed in the source/drain region, a gate electrode formed on the substrate through gate oxide film, a P type body region formed under the gate electrode and placed between the source/drain regions and, plug contact portions contacting the source/drain region and arranged in plural, and a source/drain electrode connecting to the source/drain region with contact through the contact portions.

Abstract: A semiconductor forming transistors on a semiconductor substrate includes a low concentration source/drain region formed in the semiconductor substrate, a high concentration source/drain region formed in the source/drain region, a gate electrode formed on the substrate through gate oxide film, a P type body region formed under the gate electrode and placed between the source/drain regions and, plug contact portions contacting the source/drain region and arranged in plural, and a source/drain electrode connecting to the source/drain region with contact through the contact portions.

Abstract: The semiconductor device of the invention includes transistors for a driver and dummy patterns formed to be adjacent to the end portion of each output bit group constituting a cathode driver, anode drivers and anode drivers.

Abstract: In the driver for driving display having an anode driver, a cathode driver, and memory portions of a semiconductor device of the invention, anode driver regions connected to the memory portions are laid out equally in the chip, and SRAMs are arranged equally in the vicinity of each of anode driver regions so that drawing of wiring becomes easy and size of the chip is miniaturized.

Abstract: In the driver for driving display having an anode driver, a cathode driver, and memory portions of a semiconductor device of the invention, anode driver regions connected to the memory portions are laid out equally in the chip, and SRAMs and are arranged equally in the vicinity of each of anode driver regions so that drawing of wiring becomes easy and size of the chip is miniaturized.

Abstract: A positioning device positions a driving unit of which a torque constant fluctuates depending on a position, whereby a proper quantization error is obtained even when a maximum current value in a movable range changes. The positioning device includes a position detector for detecting a present position of the drive unit, a control circuit for generating a digital drive command value corresponding to a positional error between a command position and a present position, a D/A converter for converting the digital drive command value into an analog voltage, and a driver, having a plurality of gains, for converting the analog voltage into the analog drive current with a selected gain. The control circuit selects the gain of the driver in accordance with the present position. The gain of the driver (voltage/current converting amplifier) is made variable and controlled corresponding to the position, and hence there is no necessity for covering the maximum current range with the digital command value.

Abstract: A semiconductor forming transistors on a semiconductor substrate includes a low concentration source/drain region formed in the semiconductor substrate, a high concentration source/drain region formed in the source/drain region, a gate electrode formed on the substrate through gate oxide film, a P type body region formed under the gate electrode and placed between the source/drain regions and, plug contact portions contacting the source/drain region and arranged in plural, and a source/drain electrode connecting to the source/drain region with contact through the contact portions.

Abstract: The semiconductor device of the invention includes transistors for a driver and dummy patterns formed to be adjacent to the end portion of each output bit group constituting a cathode driver, anode drivers and anode drivers.

Abstract: In the driver for driving display having an anode driver, a cathode driver, and memory portions of a semiconductor device of the invention, anode driver regions connected to the memory portions are laid out equally in the chip, and SRAMs and are arranged equally in the vicinity of each of anode driver regions so that drawing of wiring becomes easy and size of the chip is miniaturized.

Abstract: In the driver for driving display having an anode driver, a cathode driver, and memory portions of a semiconductor device of the invention, anode driver regions connected to the memory portions are laid out equally in the chip, and SRAMs and are arranged equally in the vicinity of each of anode driver regions so that drawing of wiring becomes easy and size of the chip is miniaturized.