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Abstract— An active matrix LCD with integrated drivers was developed using a standard amorphous silicon TFT technology. Despite the low mobility, the high threshold voltage and high parasitic capacitance of this technology compared to polysilicon technologies, we have built an high performance light valve for projection application. We shall discuss the topology and the main features of the integrated row and column drivers and the matrix.

Abstract— We developed a 560 × 960‐pixel 2.2‐in. AMLCD with a 46 × 50‐μm pitch and amorphous‐silicon integrated drivers. This display is intended to be used as a light valve in high‐efficiency projection systems for consumer TV. It operates at a line rate of 32 kHz in progressive scanning and an equivalent video rate of 36 MHz. It can stand high illumination intensities and achieves a good aperture ratio with a high contrast.

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A b s f r a c f -A new type of multitrack readout head is described which uses an optical detection scheme associated wilh a h i g h resolution magnetic readout of the tape. A Kerr effect transducer allows t h i s magnetooptical readout. W e present t h e general design of such a transducer and t h e experimental results we obtained. Measured performances prove that a CCD linear photodetector can be used to achieve a multitrack high resolution readout of magnetic tapes. This head is one of the two devices of a fixed head recording system which is developed to accomodate t h e video bit rate Imposed by the future digital television.