Abstract: An image display device incorporating a specialized phase expansion circuit, a rotation circuit, a sampling device and unique controlling circuitry. The phase expansion circuit includes a plurality of trail buffers or sample holder circuits for receiving a serially applied train of pixel image signals, expanding or extending the assertion cycle time and generating a corresponding plurality of expanded image signal trains in parallel. Preferably, one combination of expanded pixel image signals corresponding to specific position of pixels arranged in matrix in one train is different from another combination of expanded pixel image signals. The rotational circuit includes a plurality of selecting circuits for receiving the manifold trains of expanded pixel image signals generated by the phase expansion circuit.

Abstract: A quite small device producing blue light with small loss of light. The device has a laminated laser light-emitting portion and an optical waveguide for second-harmonic generation. Both light-emitting portion and waveguide are formed on the same semiconductor substrate. The waveguide takes the form of a thin laminated layer. The laser light-emitting portion and the waveguide are substantially flush with each other.