Abstract: The present invention offers a method of manufacturing a heat conductive substrate, with which substrate contamination on the surface of lead frame due to oozing or push out of thermosetting resin composite during heat-pressurization is suppressed. The oozing or push out of thermosetting resin composite from the through hole of lead frame can be prevented by a film attached on the components mounting surface of lead frame.

Abstract: In a power conversion module device of the present invention, a transformer, a primary power element and a secondary power element are mounted on a printed wiring board in surface-to-surface contact therewith, and no control circuit is mounted thereon. In addition to reducing impedance and loss in the wiring, this constitution improves the voltage waveform of the primary power element. Thus, noise reduction can be achieved. Further, because heat can be transferred to the printed wiring board, heat generated from the transformer, the primary power element and the secondary power element can be reduced. The size of the transformer can also be reduced.

Abstract: In a power conversion module device of the present invention, transformer (11), primary power element (14), and secondary power element (15) are mounted on printed wiring board (16) in surface-to-surface contact therewith, and no control circuit is mounted thereon. In addition to reduction in impedance and loss in the wiring, this constitution improves the voltage waveform of primary power element (14). Thus, noise reduction can be achieved. Further, because heat can be transferred to printed wiring board (16), heat generated from transformer (11), primary power element (14), and secondary power element (15) can be reduced. The size of the transformer can also be reduced.

Abstract: The present invention offers a method of manufacturing a heat conductive substrate, with which substrate contamination on the surface of lead frame due to oozing or push out of thermosetting resin composite during heat-pressurization is suppressed. The oozing or push out of thermosetting resin composite from the through hole of lead frame can be prevented by a film attached on the components mounting surface of lead frame.

Abstract: A light modulation device comprising a first transparent electrode layer, a photoconductive layer, a conductive electrode, a light modulation layer, and a second transparent electrode layer formed together in the preceding order, and characterized by the light modulation characteristic of the light modulation layer being a non-linear saturation function of an applied electrical field, and the conductive electrode comprising plural electrode patterns. The light modulation layer modulates the read light when the input light exceeds a specific threshold value wherein by forming the electrode pattern of the conductive electrode in the shape of the pattern to be extracted, the features of the input image corresponding to that shape can be quickly extracted.

Abstract: The present invention relates to a spatial light modulator used for an optical computing system or display, which comprises a photoconductive layer having a rectification function for receiving incident lights to generate charges, an electrode for accumulating the charges and a ferroelectric liquid crystal layer for modulating the incident light according to bias voltage change with the accumulated charges, wherein the ferroelectric liquid crystal layer is arranged between a pair of alignment layers made of polyimide represented by the general formula (I); ##STR1## wherein n is 2 or more, X is O, S, Se or Te, Y is an aromatic group or a substituted aromatic group, and Z is a group containing an aromatic group. In the spatial light modulator, any charges are not accumulated on the alignment layer with the driving time and thus a bistable memory condition can be realized.

Abstract: The present invention relates to a spatial light modulator used for an optical computing system or display, which comprises a photoconductive layer having a rectification function for receiving incident lights to generate charges, an electrode for accumulating the charges and a ferroelectric liquid crystal layer for modulating the incident light according to bias voltage change with the accumulated charges, wherein the ferroelectric liquid crystal layer is arranged between a pair of alignment layers made of polyimide represented by the general formula (I); ##STR1## wherein n is 2 or more, X is S, Se or Te, Y is an aromatic group or a substituted aromatic group, and Z is a group containing an aromatic group. In the spatial light modulator, any charges are not accumulated on the alignment layer with the driving time and thus a bistable memory condition can be realized.