US2016351213A1PendingUtilityA1
Apparatus and method having tdmr reader to reader shunts
Assignee: WESTERN DIGITAL (FREMONT) LLCPriority: Dec 22, 2014Filed: Aug 11, 2016Published: Dec 1, 2016
Est. expiryDec 22, 2034(~8.5 yrs left)· nominal 20-yr term from priority
Inventors:Steven C. RudyLuc Ving ChungChristopher Laurent BeaudryShaoping LiJimmy ShenGuolun HaoYingbo Zhang
G11B 5/3977Y10T29/49032G11B 5/6094G11B 5/1272G11B 5/3912G11B 5/4886G11B 5/29G11B 5/115G11B 5/4976G11B 5/3951G11B 33/1493G11B 5/3163
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Claims
Abstract
A method of making a magnetic head is provided. The method includes forming a first read sensor and a first electrical contact formed with a first shunt region. The method further includes forming a first mid-shield layer on the first read sensor, the first mid-shield layer being electrically connected to the first electrical contact. Additionally the method also includes forming a second mid-shield layer over the first mid-shield layer. Further, the method also includes forming a second read sensor over the second mid-shield layer, the second read sensor having a second electrical contact formed with a second shunt region electrically connected to the first shunt region.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method of making a magnetic head, the method comprising:
forming a first read sensor and a first electrical contact formed with a first shunt region; forming a first mid-shield layer on the first read sensor, the first mid-shield layer being electrically connected to the first electrical contact; forming a second mid-shield layer over the first mid-shield layer; and forming a second read sensor over the second mid-shield layer, the second read sensor having a second electrical contact formed with a second shunt region electrically connected to the first shunt region.
2 . The method of claim 1 , wherein the forming the first read sensor comprises:
forming a read sensor area of the read sensor; and forming the first electrical contact after the first read sensor has been formed.
3 . The method of claim 1 , wherein forming the second electrical contact electrically connected to the second mid-shield layer comprises forming an electrically resistive layer between the first shunt region and the second shunt region.
4 . The method of claim 3 , wherein the electrically resistive layer is formed to have an electrical resistance substantially equal to 10 kw.
5 . The method of claim 1 , wherein the forming the first read sensor comprises:
forming a first outer shield layer; and forming the first read sensor over the first outer shield layer; and wherein the method further comprises:
forming a second outer shield layer over the second read sensor.
6 . The method of claim 1 , wherein the forming the first electrical contact comprises forming the first shunt region in a region of the magnetic head to be removed during formation of an air bearing surface;
wherein the forming the second electrical contact comprises forming the second shunt region in the region of the magnetic head to be removed during formation of the air bearing surface; and further comprising forming the air bearing surface by removing the first shunt region, and the second shunt region.
7 . The method of claim 1 , wherein forming the second read sensor further comprises for forming a third electrical contact formed with a third shunt region, and
wherein the method further comprising: forming a third mid-shield layer on the second read sensor, the third mid-shield layer being electrically connected to the third electrical contact; forming a fourth mid-shield layer over the third mid-shield layer; and forming a third read sensor over the fourth mid-shield layer, the third read sensor having a fourth electrical contact formed with a fourth shunt region electrically connected to the third shunt region.
8 . The method of claim 7 , wherein forming the second electrical contact electrically connected to the second mid-shield layer comprises forming a first electrically resistive layer between the first shunt region and the second shunt region; and
wherein forming the fourth electrical contact electrically connected to the fourth mid-shield layer comprises forming a second electrically resistive layer between the third shunt region and the fourth shunt region.
9 . The method of claim 7 , wherein the forming the first read sensor comprises:
forming a first outer shield layer; and forming the first read sensor over the first outer shield layer; and wherein the method further comprises: forming a second outer shield layer over the third read sensor.
10 . The method of claim 7 , wherein the forming the first electrical contact comprises forming the first shunt region in a region of the magnetic head to be removed during formation of an air bearing surface;
wherein the forming the second electrical contact comprises forming the second shunt region in the region of the magnetic head to be removed during formation of the air bearing surface; wherein the forming the third electrical contact comprises forming the third shunt region in a region of the magnetic head to be removed during formation of the air bearing surface; wherein the forming the fourth electrical contact comprises forming the fourth shunt region in the region of the magnetic head to be removed during formation of an air bearing surface; and further comprising forming the air bearing surface by removing the first shunt region, the second shunt region, the third shunt region, and the fourth shunt region.
11 . A method of assembling a storage drive comprising:
forming a magnetic head using the method of claim 1 ; mounting the magnetic head on a slider arm; and mounting the slider arm proximate to a storage medium.Cited by (0)
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