Thin-film magnetic bubble domain detection device and process for manufacturing the same

A thin-film magnetic bubble domain detection device comprising

• a substrate;
• a spacer formed on said substrate to cover a surface thereof;
• at least two conductor leads each respectively formed on a different surface portion of said spacer, each said conductor lead having an upper surface and a side wall thereon with at least one slope with respect to its respective spacer surface portion;
• a magnetic field sensing element on said spacer and having ends each respectively electrically connected to a different one of said conductor leads at said respective slopes thereof without being connected to the upper surface of either conductor lead;
• and
• a dielectric film on said sensing element.

A thin-film magnetic bubble domain detection device comprising:

• a substrate;
• a spacer formed on said substrate to cover a surface thereof;
• at least two conductor leads each respectively formed on a different surface portion of said spacer, each said conductor lead having an upper surface and a side wall thereon with at least one slope with respect to its respective spacer surface portion;
• a magnetic field sensing element on said spacer and having ends each respectively electrically connected to a different one of said conductor leads at said respective slopes thereof without being connected to the upper surface of either conductor lead;
• a first dielectric film on said sensing element;
• and
• a second dielectric film on said spacer to cover regions not covered by said conductor leads or said sensing element and first dielectric film.

A thin-film bubble domain detection device, comprising

• a generally planar magnetic substrate;
• a spacer formed on the overall upper surface of said substrate;
• two spaced conductor leads formed on the upper surface of said spacer, each lead having an upper surface and a downwardly sloping end portion that makes an acute angle with respect to the substrate under each lead, and said sloping end portions of the respective conductor leads being oppositely disposed in spaced facing relationship relative to one another to define a gap on said spacer;
• and
• a magnetic field sensing element having a generally parallelpiped body portion disposed between said two upwardly sloping end portions and formed on said substrate with said body portion extending across said gap between said opposing sloping end portions of said conductor leads, and said sensing element sloping end portions making an obtuse angle with respect to the substrate in said gap and respectively positioned in mating relationship with said respective sloping end portions of said conductor leads in electrical contact therewith without being connected to the upper surface of either conductor lead.

A thin-film magnetic bubble domain detection device comprising

• a substrate;
• a spacer formed on said substrate to cover a surface thereof;
• at least two conductor leads each respectively formed on a different surface portion of said spacer, each said conductor lead having a side wall thereon with at least one slope with respect to its respective spacer surface portion, wherein a side wall of one of said conductor leads has both a lower slope and an upper slope respectively defined by different angles of inclination with respect to said substrate surface, said lower slope neighboring said substrate and having a smaller angle of inclination than that of said upper slope;
• and
• a magnetic field sensing element on said spacer and having ends each respectively electrically connected to a different one of said conductor leads at said respective slopes thereof, with said connection to said one conductor lead being to said lower slope thereof.

A thin-film magnetic bubble domain detection device comprising

• a substrate;
• a spacer formed on said substrate to cover a surface thereof;
• at least two conductor leads each respectively formed on a different surface portion of said spacer, each said conductor lead having a side wall thereon with at least one slope with respect to its respective spacer surface portion;
• a magnetic field sensing element on said spacer and having ends each respectively electrically connected to a different one of said conductor leads at said respective slopes thereof;
• and
• a dielectric film on said sensing element, said dielectric film having a width and a length which are substantially equal, respectively, to the width and length of said magnetic field sensing element.

A thin-film magnetic bubble domain detection device comprising:

• a substrate;
• a spacer formed on said substrate to cover a surface thereof;
• at least two conductor leads each respectively formed on a different surface portion of said spacer, each said conductor lead having a side wall thereon with at least one slope with respect to its respective spacer surface portion;
• a magnetic field sensing element on said spacer and having ends each respectively electrically connected to a different one of said conductor leads at said respective slopes thereof;
• a first dielectric film on said sensing element;
• and
• a second dielectric film on said spacer to cover regions not covered by said conductor leads or said sensing element and first dielectric film, wherein the sum of the thicknesses of said first dielectric film and said magnetic field sensing element on said spacer is substantially equal to the thickness of said conductor leads on said spacer.

A thin-film magnetic bubble domain detection device, comprising

• a generally planar magnetic substrate;
• a spacer formed on the overall upper surface of said substrate;
• two spaced conductor leads formed on the upper surface of said spacer, each lead having a downwardly sloping end portion that makes an acute angle with respect to the substrate under each lead, and said sloping end portions of the respective conductor leads being oppositely disposed in spaced facing relationship relative to one another to define a gap on said spacer;
• a magnetic field sensing element having a generally parallelpiped body portion disposed between said two upwardly sloping end portions and formed on said substrate with said body portion extending across said gap between said opposing sloping end portions of said conductor leads, and said sensing element sloping end portions making an obtuse angle with respect to the substrate in said gap and respectively positioned in mating relationship with said respective sloping end portions of said conductor leads in electrical contact therewith;
• a dielectric layer formed on the overall upper surface of said sensing element, said dielectric layer having a width and length generally equal to the width and length of said sensing element, and said dielectric layer having a configuration with respect to the sensing element such that the combined structure of said dielectric layer and said sensing element forms a continuous flush contour joining said opposing sloping ends of said conductor leads.