# US 10,121,503 B2 · Suspension board with circuit having thinned insulating second portion overlapping second terminal

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- Number: US 10,121,503 B2
- Document ID: US10121503B2
- Status: Granted
- Kind: B2
- Application number: 15/689,695
- Filed: 2017-08-29
- Published: 2018-03-15
- Granted: 2018-11-06
- Earliest claimed: 2016-09-15
- Assignees: Nitto Denko Corporation
- Applicants: Nitto Denko Corporation
- Inventors: Yuu Sugimoto; Hiroyuki Tanabe
- Web page: https://patentgrep.com/patent/US10121503B2

## CPC

- G11B 5/4853: {Constructional details of the electrical connection between head and arm}
- H05K 1/119: {Details of rigid insulating substrates therefor, e.g. three-dimensional details (H05K1/117 takes precedence)}
- H05K 1/184: associated with components inserted in holes through the PCBs and wherein terminals of the components are connected to printed contacts on the walls of the holes or at the edges thereof or protruding over or into the holes
- H05K 3/0023: {by exposure and development of a photosensitive insulating layer}
- H05K 3/0041: {by plasma etching}
- H05K 3/06: the conductive material being removed chemically or electrolytically, e.g. by photo-etch process {(semi-additive methods H05K3/108)}
- H05K 3/4015: {using auxiliary conductive elements, e.g. pieces of metal foil, metallic spheres}
- G11B 5/3163: {Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers}
- G11B 2005/0021: {Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal}
- H05K 1/056: {the metal substrate being covered by an organic insulating layer}
- H05K 3/3405: {Edge mounted components, e.g. terminals}
- H05K 2201/09063: Holes or slots in insulating substrate not used for electrical connections
- H05K 2201/09154: Bevelled, chamferred or tapered edge
- H05K 2201/09827: Tapered, e.g. tapered hole, via or groove
- H05K 2201/10106: Light emitting diode [LED]
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A suspension board with circuit having an opening with an electronic element inserted therein includes an insulating layer disposed at the edge of the opening, a first terminal disposed at one surface of the insulating layer and connected to a magnetic head, and a second terminal disposed at the other surface thereof and connected to the electronic element. The insulating layer includes a first portion in which the first terminal is disposed and a second portion that extends from the first portion toward the opening and is overlapped with a slider. The second portion is thinner than the first portion and is overlapped with the second terminal. The slider has a first surface facing the second portion. The first surface is disposed between the first terminal and the second terminal.

## Claims

### Claim 1

A suspension board with circuit capable of being mounted with a slider including a magnetic head and an electronic element for assisting the magnetic head, and having an opening with the electronic element inserted therein at the time of mounting of the slider comprising:
an insulating layer disposed at the edge of the opening,
a first terminal disposed at one surface of the insulating layer in a thickness direction of the insulating layer and electrically connected to the magnetic head at the time of mounting of the slider, and
a second terminal disposed at the other surface of the insulating layer in the thickness direction and electrically connected to the electronic element at the time of mounting of the slider, wherein
the insulating layer includes a first portion in which the first terminal is disposed and
a second portion that extends from the first portion toward the opening in a plane direction perpendicular to the thickness direction and is overlapped with the slider in the thickness direction at the time of mounting of the slider;
the second portion is thinner than the first portion so that one surface gets closer to the other surface and is overlapped with the second terminal in the thickness direction;
the slider has a first surface facing the second portion and a second surface disposed at the opposite side to the second portion with respect to the first surface in the thickness direction; and
the first surface is disposed between the first terminal and the second terminal at the time of mounting of the slider.

### Claim 2 (depends on 1)

The suspension board with circuit according to claim 1, wherein
the second portion includes an inclined surface that gradually inclines from one surface toward the other surface as it goes from the first portion toward the opening.

### Claim 3 (depends on 1)

The suspension board with circuit according to claim 1, wherein
a portion of the second terminal is overlapped with a portion of the first terminal in the thickness direction.

### Claim 4 (depends on 1)

The suspension board with circuit according to claim 1, wherein
the electronic element includes a main body portion supported by the slider and an emitting portion protruding from the main body portion for emitting light;
a plurality of second terminals are provided; and
at least one of the plurality of second terminals is electrically connected to the main body portion and is overlapped with the second portion in the thickness direction at the time of mounting of the slider.

### Claim 5

A suspension board with circuit capable of being mounted with a slider including a magnetic head and an electronic element for assisting the magnetic head, and having an opening with the electronic element inserted therein at the time of mounting of the slider comprising:
an insulating layer disposed at the edge of the opening,
a first terminal disposed at one surface of the insulating layer in a thickness direction of the insulating layer and electrically connected to the magnetic head at the time of mounting of the slider, and
a second terminal disposed at the other surface of the insulating layer in the thickness direction and electrically connected to the electronic element at the time of mounting of the slider, wherein
the insulating layer includes
a first portion in which the first terminal is disposed and
a second portion that extends from the first portion toward the opening in a plane direction perpendicular to the thickness direction and is overlapped with the slider in the thickness direction at the time of mounting of the slider;
the second portion includes an inclined surface that gradually inclines from one surface toward the other surface as it goes from the first portion toward the opening;
the slider has a first surface facing the second portion and a second surface disposed at the opposite side to the second portion with respect to the first surface in the thickness direction; and
the first surface is disposed between the first terminal and the second terminal at the time of mounting of the slider.