(US4713518-A)      Electronic device having a transparent conductive layer is formed by: forming the layer on the surface of an (in)organic insulator or non-single crystal semiconductor, the layer being 2 micron or less thick and formed of a sublimable metal oxide or nitride, the semiconductor being sublimable material including an H or hal dangling bond neutraliser; and exposing the layer to pulsed laser beams which are squeezed in only one direction after expansion in cross-section and have wavelength 400nm or less and optical energy greater than the band gap of the layer.    USE/ADVANTAGE -   The conductive layer can be precisely patterned to spacings of 100 microns or less.(First major country equivalent to J61089636-A)    (US4874920-A)      Laser scribing method, for producing grooves on a semiconductor layer (I), comprises firstly expanding laser light emitted from an eximer laser w.r.t. the cross-section of the laser light. The expanded laser light is then contracted in only one direction by a convex lens. The contracted laser light is focussed on layer (I) and finally part of layer (I) is sublimed. The convex lens is the lens nearest layer (I), forming a focal point when the subliming occurs. Pref. layer (I) is an element of a solar cell.    USE/ADVANTAGE -   Mfr. of an electronic device is provided having at least one transparent conductive layer. The layer can be formed with high precision and without damaging the underlying substrate. (10pp)r    (US4970368-A)      Multiple grooves are prepd. on a laminate using a square or rectangular sectioned laser light reflected via a mirror into a convex lens system which concentrates the laser energy onto the work surface.    ADVANTAGE -   The system is esp. suitable for the fabrication of semiconductor photoelectric devices since the grooves can be formed with clean accurate edges free of cracking. The enhanced accuracy allows a high density of grooves to be formed in the sublimable layer of metal (oxide). (10pp)a    (US4970369-A)      Multiple grooves are produced on the surface of a coated substrate using a laser beam with a square or rectangular cross section which is expanded and then focussed in one direction to give concentrated laser light energy distributed along a line corresponding to one of the grooves to be formed. The laser energy serves to remove sublimable material from the surface groove zone.    ADVANTAGE -   Fine grooves with a spacing of 100 microns or less can be formed on the surface metal (oxide) layer allowing high density devices to be fabrictaed. (10pp)