Thin-film magnetic head connection structure

• US 5,200,870 A
• Filed: 04/15/1992
• Issued: 04/06/1993
• Est. Priority Date: 05/17/1990
• Status: Expired due to Fees

• Current Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Original Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Inventors: Draaisma, Eeltje A., Pronk, Franciscus A., Van Heeren, Arie H.
• Primary Examiner(s): Wolff, John H.
• Application Number:
  US07/870,726
• Time in Patent Office: 356 Days
• Field of Search: 360/126, 360/125, 360/123, 360/122, 360/127
• US Class Current: 360/123.36
• CPC Class Codes: G11B 5/31 using thin films G11B5/1274, G11B5/1278, G11B5/1874, G11B5/1875, G11B5/33, G11B5/49 take precedence; magnetic thin film structures H01F10/00

Abstract

A thin-film magnetic head has a connecting tab (22), provided on a substrate (23) for the connection of an external connecting track (16). In the region of a central portion (21) of the connecting tab an auxiliary layer (26) is provided between the connecting tab (22) and the substrate (23), as a result of which the central portion (21) of the connecting tab is located at a larger distance from the substrate than coating portions (24) of a shielding layer (25). This provides a proper contact between the external connecting track (16) and the connecting tab (22), even if the external connecting track (16) is in not such a good position with respect to the connecting tab (22).

Claims

1. A thin-film magnetic head, having a substrate and at least a multilayer magnetic head structure present on the substrate, said structure including a shielding layer and at least one connecting tab for connecting said magnetic head structure to a connecting track external to said magnetic head, the edges of said connecting tab being covered by covering portions of said shielding layer, characterized in that the height from the substrate of a central portion of said connecting tab, uncovered by said covering portions, is at least as large as the height from the substrate of said covering portions.

2. A thin-film magnetic head as claimed in claim 1, characterized in that in the region of the central portion of the connecting tab at least one auxiliary layer is provided between the substrate and the connecting tab.

3. A thin-film magnetic head as claimed in claim 2, characterized in that the auxiliary layer forms part of at least one of the layers of the magnetic head structure.