Abstract: A flat panel VDU or TV screen has pixel elements controlled by an array of small single crystal semiconductor bars or chips. Power and information are connected directly or capacitatively to the chips; chip surfaces have pick-up pads. X-Y address lines are provided on a VDU panel substrate, and each chip has bridging links to complete continuity of the Y-line. For data address, data lines are provided on the substrate, and decoding an address recognition circuitry is incorporated in each chip. Chips may be responsive to more than one address, and may be addressed either singly or using a single code address. Each chip may control its neighboring pixels. A single crystal wafer is processed and mounted on a support. Chips are defined by back etching the wafer and separated by stretching the support prior to transfer to a substrate. Self aligned electrodes may be produced using a mask stretched on the surface of the support.

Abstract: A medical implant for injecting into the vascular system of animals comprises a device less than 500 .mu.m in size carrying signal processing means for providing an output in response to an input signal. The input may be acoustic, electromagnetic, temperature, pH value, or chemical. The output may be acoustic, electromagnetic, or chemical. Large numbers, e.g., 10.sup.8, of the implant devices may be mixed into a saline solution and injected into a blood vessel where they are carried around the vascular system, or the devices may be mixed with a gas and inhaled. The amount of circulation depends on the device size. For the larger device e.g., above 7 .mu.m to around 250 .mu.m, circulation will be short lived. Smaller sized e.g., <3 .mu.m devices will circulate for a considerable time. Anti-bodies may be coated onto the devices to cause them to adhere to target areas such as tumors. In one device a chemical is released when illuminated externally by an acoustic beam.

Abstract: The invention concerns an edge connector for mounting on the edge of flat panel displays, e.g. liquid crystal or electroluminescent display panels, arranged in matrix format. The edge connectors have mounted therein drive electronics, e.g. serial input parallel output shift registers. Two series of conductors are carried by the edge connector body, one series of conductors connect with external control circuits and the other series of conductors connect with addressing electrodes on a display panel. Faulty drive electronics are easily replaced by unclipping the edge connector from the panel and substituting a new edge connector complete with new drive electronics.

Abstract: A d.c. electroluminescent panel comprises a transparent substrate, a transparent first electrode film, a phosphor layer, and a second electrode film. Application of a voltage across the phosphor layer causes it to emit light.In this invention the phosphor layer is produced in two layers, a first semi-insulating thin layer of activator doped phosphor and a second electrically conducting layer of phosphor.