Abstract:
An optical semiconductor apparatus having no polarization dependency and an optical communication system using the semiconductor apparatus are provided. In an optical communication system wherein a signal is demultiplexed by using a semiconductor waveguide type filter disposed on a receiver side, two semiconductor lasers disposed on a transmitter side modulate two light signals having different wavelengths using a common modulation signal and transmit the modulated light signals. One of the different wavelengths is accorded, for example, to the TE mode transmission wavelength of the filter, and the other is accorded, for example, to the TM mode transmission wavelength of the filter. On the receiver side, lights at different wavelengths may be branched into two light portions and the branched light portions may be respectively detected by two photodetectors.
Abstract:
An electron beam display comprising a first substrate (1011) having an electron emitting device (1012); a second substrate having a transparent substrate (1017), a phosphor layer (1018) provided on the transparent substrate, a mask member for demarcating the phosphor layer into light-emitting regions, an accelerating electrode (1019) for accelerating electrons emitted from the electron emitting device, and an antistatic film (1022); a vacuum enclosure constituted of a member including the first and second substrates spaced from each other and having therein a spacer member (1020) for maintaining the spacing and a getter; and a drive circuit including a scanning line drive circuit for sequentially applying a scanning signal to scanning lines (1014) and a control line drive circuit for applying a modulation signal corresponding to image information to all the control lines (1013) at once synchronously with the scanning lines.
Abstract:
An image forming device having an enclosure comprising a pair of mutually opposed substrates and an outer frame interposed between the substrates and further comprising in the enclosure an electron source provided on one of the substrates, an image forming member provided on the other substrate, and a spacer disposed between the substrates, wherein the spacer and the outer frame are conductive, and there is provided means for electrically connecting the spacer and the outer frame so that the equipotential surfaces between the spacer and the outer frame are generally parallel during drive.
Abstract:
An electron source comprising an electron-emitting device for emitting electrons according to input signals, characterized in that said electron-emitting device comprises a pair of oppositely disposed electrodes; and an electroconductive film arranged between the electrodes and including a high resistance region, wherein the high resistance region has a deposit containing carbon as a principal ingredient.
Abstract:
An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film arranged between the electrodes and including a high resistance region. The high resistance region has a deposit containing carbon as a principal ingredient. The electron-emitting device can be used for an electron source of an image-forming apparatus of the flat panel type.
Abstract:
A method for producing an electron-emitting device comprising an electroconductive film having an electron-emitting region between electrodes, wherein a step of forming the electron-emitting region in the electroconductive film comprises steps of heating and energizing the electroconductive film, wherein an atmosphere in which a gas for promoting cohesion of the electroconductive film is introduced following the start of those steps of heating and energising.