| abstract |
The present invention concerns an electro-optical cell, in particular a liquid crystal display cell ( 2 ), or an electrochemical photovoltaic cell, including in particular a first transparent front substrate ( 4 ) and a second back substrate ( 6 ) which may or may not be transparent, said substrates ( 4, 6 ) being joined by a sealing frame that defines a volume ( 8 ) for retaining a sensitive material whose physical properties, particularly optical, or electrical properties are capable of changing, said substrates ( 4, 6 ) including on their faces opposite each other at least one electrode ( 14, 16 ), these electrodes ( 14, 16 ) being intended to be connected to an electrical power or control circuit, said cell ( 2 ) being characterised in that the sealing frame includes at least one wall ( 12 ) structured on one of the two substrates ( 4, 6 ) and which defines via its inner lateral face the volume ( 8 ) for retaining the sensitive material, the substrates ( 4, 6 ) being joined by a sealing frame ( 30 ), which occupies at least part of the gap ( 28 ) defined by said two substrates ( 4, 6 ) and the external lateral face of the wall ( 12 ), and in that the electrodes ( 14, 16 ) include contact bumps ( 20 ) made of an electrically conductive material added onto the extension of each electrode ( 14, 16 ) at the place where the latter emerges from the wall ( 12 ), so as to increase the surface of the lateral electrical contact zone via which each electrode ( 4, 6 ) of the cell ( 2 ) is connected to the electrical power or control circuit. |