METHOD FOR FABRICATING DOUBLE SIDED CERAMIC CIRCUIT BOARDS USING A TITANIUM SUPPORT SUBSTRATE

• Main Authors: PALIT, KALIPADA, PRABHU, ASHOK, N, HOZER, LESZEK, SREERAM, ATTIGANAL, N
• Format: Patent
• Language: English; French
• Published: 16.09.1999
• Edition: 6
• Subjects: BASIC ELECTRIC ELEMENTS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

An integrated double sided metal supported display device has a green tape stack on both sides of the metal support. The green tape stacks incorporate circuitry and conductor filled vias to access the circuitry electrically on each green tape layer. The metal support has a plurality of openings to access both of the green tape stacks. These openings are made by forming the openings in the metal support, filling them with a dielectric that has a thermal coefficient of expansion close to that of the metal support, forming an opening in the dielectric and filling the opening with a conductive ink. Cette unité d'affichage intégrée à support métal double face comporte un empilement de rubans crus des deux cotés du support métallique. Ces empilements renferment des circuits et des trous d'interconnexion conducteurs garnis donnant accès électriquement aux circuits sur chaque couche de ruban cru. Dans le support métallique sont ménagées plusieurs ouvertures assurant l'accès aux deux empilements. On ménage ces ouvertures dans le support métallique en forant celui-ci puis en remplissant les cavités d'un matériau diélectrique, dont le coefficient thermique est proche de celui du support métallique, et en creusant une ouverture dans le matériau diélectrique, ouverture que l'on remplit d'une encre conductrice.